Listaerioza
Objawy

Listerioza, wywoływana przez Listeria monocytogenes, jest zakażeniem przenoszonym drogą pokarmową, które u osób zdrowych zwykle przebiega łagodnie z objawami żołądkowo-jelitowymi pojawiającymi się w ciągu 24 godzin i trwającymi 1-3 dni. W grupach wysokiego ryzyka, takich jak kobiety ciężarne, noworodki, osoby starsze oraz pacjenci z immunosupresją, zakażenie może przybrać postać inwazyjną z objawami neurologicznymi (wysoka gorączka, sztywność karku, zaburzenia świadomości) pojawiającymi się średnio po 21 dniach (zakres 3-70 dni). U kobiet ciężarnych listerioza może przebiegać łagodnie, ale stanowi poważne zagrożenie dla płodu, prowadząc do poronień, porodów przedwczesnych i zakażeń noworodków, które charakteryzują się wysoką śmiertelnością (20-30%).

Wprowadzenie do listeriozy

Listerioza (łac. Listaerioza) to zakażenie wywoływane przez bakterię Listeria monocytogenes. Jest to choroba przenoszona drogą pokarmową, występująca po spożyciu zanieczyszczonej żywności. Zakażenie to zazwyczaj powoduje łagodne objawy u osób zdrowych, jednak może prowadzić do poważnych, zagrażających życiu powikłań u osób z grup wysokiego ryzyka, takich jak kobiety ciężarne, noworodki, osoby starsze oraz pacjenci z obniżoną odpornością.123

Objawy listeriozy

Obraz kliniczny listeriozy jest zróżnicowany i zależy od nasilenia oraz postaci choroby. Mogą występować dwie główne formy zakażenia: postać nieinwazyjna (żołądkowo-jelitowa) oraz inwazyjna (ogólnoustrojowa).12

Listerioza nieinwazyjna

Listerioza nieinwazyjna (żołądkowo-jelitowa) jest łagodniejszą postacią choroby, która występuje głównie u osób z prawidłowo funkcjonującym układem odpornościowym. Objawy zazwyczaj pojawiają się w ciągu 24 godzin od spożycia zanieczyszczonej żywności i utrzymują się od 1 do 3 dni.12 Typowe objawy obejmują:

  • Gorączkę12
  • Biegunkę12
  • Nudności i wymioty12
  • Bóle mięśniowe i stawowe12
  • Bóle głowy12
  • Zmęczenie12

U większości zdrowych dorosłych, listerioza może przebiegać bezobjawowo lub z łagodnymi objawami grypopodobnymi, które ustępują samoistnie w ciągu kilku dni.12

Listerioza inwazyjna

Listerioza inwazyjna jest poważniejszą postacią choroby, która występuje, gdy bakterie przedostają się poza przewód pokarmowy do krwiobiegu i mogą rozprzestrzeniać się do innych narządów, w tym ośrodkowego układu nerwowego.12 Objawy tej postaci choroby mogą pojawić się od 3 dni do nawet 70 dni po narażeniu na bakterie, przy czym średni okres inkubacji wynosi około 3 tygodnie.12

Objawami inwazyjnej listeriozy są:12

  • Wysoka gorączka12
  • Silne bóle głowy12
  • Sztywność karku12
  • Zaburzenia równowagi i koordynacji12
  • Splątanie i zaburzenia świadomości12
  • Drgawki12
  • Utrata przytomności (w ciężkich przypadkach)12

Inwazyjna postać listeriozy może prowadzić do poważnych powikłań, takich jak zapalenie opon mózgowo-rdzeniowych, zapalenie mózgu, posocznica oraz rozsiane zakażenie układowe.12

Listerioza w grupach wysokiego ryzyka

Listerioza u kobiet w ciąży

Kobiety ciężarne mają około 10-20 razy większe ryzyko zakażenia listeriozą niż populacja ogólna.12 U kobiet ciężarnych zakażenie zwykle przebiega łagodnie lub może być bezobjawowe, co utrudnia jego rozpoznanie.12

Objawy listeriozy u kobiet w ciąży często przypominają łagodną infekcję grypopodobną i mogą obejmować:12

  • Gorączkę12
  • Zmęczenie12
  • Bóle mięśniowe12
  • Bóle stawów12
  • Bóle głowy12
  • Bóle pleców12
  • Czasem lekkie objawy żołądkowo-jelitowe12

Pomimo łagodnych objawów u matki, listerioza w ciąży stanowi poważne zagrożenie dla rozwijającego się płodu. Bakterie mogą przeniknąć przez łożysko i zakazić płód, co może prowadzić do:12

  • Poronienia12
  • Porodu przedwczesnego12
  • Urodzenia martwego dziecka12
  • Zakażenia u noworodka12

Ryzyko zakażenia jest najwyższe w trzecim trymestrze ciąży, gdy układ odpornościowy matki jest najbardziej osłabiony.12

Listerioza u noworodków

Zakażenie listeriozą u noworodków może przebiegać w dwóch postaciach: wczesnej i późnej.12

Wczesna postać listeriozy noworodkowej pojawia się w ciągu pierwszych 7 dni życia, najczęściej w ciągu 24-48 godzin po urodzeniu. Jest zazwyczaj wynikiem transmisji przezłożyskowej bakterii od matki do płodu.12 Objawy wczesnej postaci listeriozy noworodkowej obejmują:12

  • Osłabienie i senność12
  • Trudności z oddychaniem (zapalenie płuc)12
  • Posocznicę12
  • Gorączkę lub hipotermię12
  • Żółtaczkę12
  • Wysypkę skórną12
  • Słabe ssanie i brak apetytu12
  • Wymioty12
  • Niską masę urodzeniową12

Późna postać listeriozy noworodkowej pojawia się zwykle po 7 dniach życia, najczęściej między 1 a 2 tygodniem. Uważa się, że zakażenie późne związane jest głównie z ekspozycją na bakterie podczas porodu lub z zakażeniem w środowisku szpitalnym.12 Objawy późnej postaci listeriozy noworodkowej obejmują przede wszystkim objawy zapalenia opon mózgowo-rdzeniowych:12

  • Gorączkę12
  • Drażliwość12
  • Słabe ssanie12
  • Objawy zapalenia opon mózgowo-rdzeniowych12

Śmiertelność w przypadku listeriozy noworodkowej jest wysoka, szczególnie we wczesnej postaci, gdzie wynosi około 20-30%.12

Listerioza u osób starszych i z obniżoną odpornością

Osoby starsze (powyżej 65 roku życia) oraz pacjenci z obniżoną odpornością (np. chorzy na nowotwory, zakażeni HIV, po przeszczepach, z przewlekłymi chorobami) są szczególnie narażeni na inwazyjną postać listeriozy.12

W tych grupach wysokiego ryzyka, listerioza może przebiegać szczególnie ciężko, powodując:12

  • Zapalenie opon mózgowo-rdzeniowych12
  • Zapalenie mózgu12
  • Posocznicę12
  • Ropnie mózgu1
  • Zapalenie wsierdzia12

Śmiertelność w przypadku inwazyjnej listeriozy u osób starszych i z obniżoną odpornością wynosi około 20-30%.12

Progresja choroby

Okres inkubacji

Okres inkubacji listeriozy jest bardzo zróżnicowany i zależy od postaci klinicznej choroby:12

  • W przypadku listeriozy nieinwazyjnej (żołądkowo-jelitowej), objawy pojawiają się zwykle w ciągu 24 godzin od spożycia zanieczyszczonej żywności i utrzymują się przez 1-3 dni.12
  • W przypadku listeriozy inwazyjnej, objawy mogą pojawić się od 3 dni do nawet 70 dni po ekspozycji na bakterie, przy czym średni okres inkubacji wynosi około 3 tygodnie (21 dni).12

Długi i zmienny okres inkubacji listeriozy często utrudnia powiązanie objawów z konkretnym źródłem zakażenia.12

Przebieg kliniczny

Przebieg kliniczny listeriozy zależy od formy zakażenia oraz stanu zdrowia pacjenta:12

  • U zdrowych dorosłych i dzieci, listerioza zwykle przebiega łagodnie, z objawami grypopodobnymi lub żołądkowo-jelitowymi, które ustępują samoistnie w ciągu kilku dni.12
  • U kobiet ciężarnych, przebieg kliniczny jest zwykle łagodny dla matki, ale może mieć poważne konsekwencje dla płodu.12
  • U noworodków, listerioza może przebiegać jako ciężka, ogólnoustrojowa infekcja, prowadząca do posocznicy, zapalenia opon mózgowo-rdzeniowych lub zapalenia płuc, z wysoką śmiertelnością.12
  • U osób starszych i z obniżoną odpornością, listerioza często przebiega jako ciężka, inwazyjna choroba, z zajęciem układu nerwowego i/lub posocznicą.12

Długość trwania objawów listeriozy może wynosić od kilku dni do kilku tygodni, w zależności od postaci klinicznej, wczesnego rozpoznania i wdrożenia właściwego leczenia.12

Potencjalne powikłania

Listerioza może prowadzić do poważnych powikłań, szczególnie w grupach wysokiego ryzyka:12

  • Zapalenie opon mózgowo-rdzeniowych – infekcja błon otaczających mózg i rdzeń kręgowy12
  • Zapalenie mózgu – zapalenie tkanki mózgowej12
  • Posocznica – ogólnoustrojowa reakcja zapalna wywołana zakażeniem12
  • Ropnie mózgu12
  • Zapalenie wsierdzia – zakażenie wyściółki serca i zastawek12
  • W ciąży: poronienie, poród przedwczesny, urodzenie martwego dziecka12
  • U noworodków: trwałe uszkodzenia neurologiczne, opóźnienie rozwoju12

Śmiertelność inwazyjnej listeriozy w ogólnej populacji wynosi około 20-30%, ale może być wyższa u noworodków i osób z obniżoną odpornością.12

Postępowanie medyczne

Postępowanie w przypadku listeriozy zależy od ciężkości objawów, postaci klinicznej oraz czynników ryzyka pacjenta:12

  • U zdrowych dorosłych z łagodnymi objawami listeriozy nieinwazyjnej, leczenie zwykle nie jest konieczne – objawy ustępują samoistnie w ciągu kilku dni.12
  • Pacjenci z grup wysokiego ryzyka (kobiety ciężarne, osoby starsze, pacjenci z obniżoną odpornością) z podejrzeniem listeriozy powinni być leczeni antybiotykami, nawet przy łagodnych objawach.12
  • W przypadku inwazyjnej listeriozy, konieczne jest intensywne leczenie antybiotykami dożylnymi.12

Wczesne rozpoznanie i leczenie listeriozy ma kluczowe znaczenie, szczególnie u kobiet ciężarnych i innych osób z grup wysokiego ryzyka, aby zapobiec poważnym powikłaniom.12

Podsumowanie objawów listeriozy

Objawy listeriozy mogą być zróżnicowane, od łagodnych objawów grypopodobnych do ciężkich powikłań neurologicznych. Czas inkubacji może wahać się od 24 godzin do nawet 70 dni. Przebieg kliniczny zależy od postaci zakażenia (nieinwazyjna vs. inwazyjna) oraz stanu zdrowia pacjenta.12

Szczególnie narażone na ciężki przebieg listeriozy są kobiety ciężarne, noworodki, osoby starsze oraz pacjenci z obniżoną odpornością. W tych grupach choroba może prowadzić do poważnych powikłań, w tym zapalenia opon mózgowo-rdzeniowych, posocznicy, a nawet śmierci.12

Wczesne rozpoznanie i leczenie listeriozy, szczególnie u osób z grup wysokiego ryzyka, ma kluczowe znaczenie dla zmniejszenia ryzyka poważnych powikłań i poprawy rokowania.12

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  1. 13.04.2026
  2. www.leksykon.com.pl

Materiały źródłowe

  • #1 Listeriosis: symptoms, treatment, prevention – Institut Pasteur
    https://www.pasteur.fr/en/medical-center/disease-sheets/listeriosis?language=fr
    Listeriosis is a severe foodborne infection caused by the bacterium Listeria monocytogenes. It can cause septicemia or central nervous system infections. In pregnant women, it can lead to miscarriage, premature delivery or serious neonatal infection. […] The incubation period for listeriosis can range from a few days to two months. There is a non-invasive form of listeriosis, which affects people in good health. It causes non-specific symptoms such as diarrhea, fever, muscle pain and headache. […] The second form, described as invasive (since the bacteria do not remain in the digestive tract), mainly affects vulnerable and immunocompromised people, like pregnant women, infants, elderly people, people with cancer and transplant recipients. In adults, the disease causes an infection of the blood (septicemia) or even the central nervous system, manifesting mainly as meningoencephalitis (an infection of the membranes, or meninges, covering the brain, and the brain itself).
  • #1
    https://www.who.int/news-room/fact-sheets/detail/listeriosis
    Listeriosis is a series of diseases caused by the bacteria L. monocytogenes, outbreaks of which occur in all countries. […] Noninvasive listeriosis (febrile listerial gastroenteritis) is a mild form of the disease affecting mainly otherwise healthy people. Symptoms include diarrhoea, fever, headache and myalgia (muscle pain). The incubation period is short (a few days). […] Invasive listeriosis is a more severe form of the disease and affects certain high risk groups of the population. These include pregnant women, patients undergoing treatment for cancer, HIV and organ transplants, elderly people and infants. This form of disease is characterized by severe symptoms and a high mortality rate (2030%). The symptoms include fever, myalgia (muscle pain), septicemia, meningitis. The incubation period is usually one to two weeks but can vary between a few days and up to 90 days.
  • #1 Symptoms of Listeria Infection | Listeria Infection | CDC
    https://www.cdc.gov/listeria/signs-symptoms/index.html
    Symptoms in people who are not pregnant can be severe. In cases of invasive listeriosis not associated with pregnancy, almost 1 in 6 people die. […] Symptoms of intestinal illness usually start within 24 hours after eating food contaminated with Listeria and usually last 13 days. […] Symptoms typically include: Diarrhea, Vomiting. […] Symptoms are usually mild. However, some people with intestinal illness develop invasive illness. […] Contact a healthcare provider if both of the following things apply to you: You ate food that has been recalled or linked to an outbreak. You have a fever and other symptoms of listeriosis, such as fatigue and muscle aches.
  • #1 Listeriosis (Listeria Infection): Causes, Symptoms & Treatment
    https://my.clevelandclinic.org/health/diseases/17721-listeriosis
    Listeriosis is an illness you can get from eating something contaminated with Listeria bacteria. Common symptoms include fever, headache and diarrhea. […] For many people, a Listeria infection causes mild symptoms like a fever, headache, diarrhea or vomiting. […] Symptoms of listeriosis include fever, chills, headache, fatigue, diarrhea, nausea, vomiting and muscle aches. […] You might not have all these symptoms. If Listeria spreads beyond your digestive system (invasive listeriosis), you might have additional, severe symptoms. These include: confusion, loss of balance, stiff neck, seizures. […] Symptoms of listeriosis can start a few days to two weeks after eating contaminated food. […] If you have mild symptoms and aren’t pregnant or at risk for serious complications, you might not need treatment. […] You can manage the symptoms of listeriosis by resting and drinking lots of fluids.
  • #1 Listeria infection – Symptoms & causes – Mayo Clinic
    https://www.mayoclinic.org/diseases-conditions/listeria-infection/symptoms-causes/syc-20355269
    Symptoms of a listeria infection partly depend on where in the body that the infection happens. If it affects the gut, you might have: Loose stools, called diarrhea. Upset stomach. Vomiting. These symptoms often start within a day of eating tainted food. They tend to go away within a few days. […] The germs that cause a listeria infection also can spread through the blood and into the brain and spinal cord. If this happens, you might have: Fever and chills. Flu-like symptoms such as muscle aches and fatigue. Diarrhea or an upset stomach. Headache. Stiff neck. Confusion or changes in alertness. Loss of balance. Seizures. These symptoms often start within two weeks of eating tainted food. But it can take up to two months for symptoms to begin. […] During pregnancy, a listeria infection is likely to cause only mild symptoms in the pregnant person. But the effects on the baby can be devastating. The baby can die in the womb or have a life-threatening infection within a few days of birth. […] Symptoms of a listeria infection in a newborn can be subtle. But they can include: Little interest in feeding. Crankiness. High temperature, called fever, or low temperature, called hypothermia. Vomiting. Trouble breathing. Little to no energy. Low birth weight.
  • #1 Listeria infection (listeriosis) – Mother To Baby | Fact Sheets – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK582795/
    Not everyone infected with Listeria will develop symptoms. Symptoms could include diarrhea, fever, muscle pain, joint pain, headache, stiff neck, backache, chills, sensitivity to bright light, and/or sore throat with fever and swollen glands. These symptoms can begin days to weeks after eating contaminated food. […] Pregnancies affected by or exposed to Listeria can have an increased chance of infection in the uterus, preterm delivery (birth before week 37) or low birth weight (weighing less than 5 pounds, 8 ounces (2500 grams) at birth. Severe infection can increase the chance of stillbirth. […] Newborn babies infected with Listeria can develop either early-onset or late-onset listeriosis. Early onset listeriosis develops 1-2 days after birth, and the baby often has signs of a serious bacterial infection. Late-onset listeriosis occurs 1-2 weeks after birth and usually includes symptoms of meningitis (a condition that causes areas of swelling around the brain and spinal cord in the baby). If not treated quickly, meningitis can lead to long-term problems for some children. Late-onset listeriosis is most likely related to Listeria present in the mother’s birth canal. Not all babies who are exposed to listeriosis during pregnancy will have problems.
  • #1 Listeria (Listeriosis): Signs, Symptoms, and Treatment
    https://patient.info/infections/listeria-leaflet
    Listeriosis is a rare infection that is caused by a type of germ (bacteria) called listeria. It usually causes a mild illness that doesn’t need any treatment. […] However, it can cause a serious illness, especially in the elderly and people with a weak immune system. Infection during pregnancy can also cause a severe illness for the unborn baby. […] Most healthy adults and children who develop listeriosis have only a mild flu-like illness or infection of the gut (gastroenteritis), with diarrhoea and sometimes being sick (vomiting). Severe infection with blood poisoning (septicaemia) or infection around the brain (meningitis) may occur, especially in the elderly and in those with weakened immune systems. […] Listeriosis in pregnancy can cause a mild illness in the mother. However, infection during pregnancy can cause miscarriage, premature delivery, stillbirth or serious illness in a newborn child.
  • #1 Listeria Monocytogenes (Listeriosis): Causes, Symptoms, Diagnosis, Treatment
    https://www.medicinenet.com/listeria/article.htm
    Fever, muscle aches, and occasionally, gastroenteritis (nausea and/or diarrhea) are the usual symptoms associated with listeriosis. […] Some individuals may also experience fatigue and a decrease or loss of appetite. […] These flu-like symptoms usually last up to one week and may spontaneously resolve. […] However, in some people, the organisms can spread to the brain. […] The symptoms of meningitis and/or encephalitis (stiff neck, headache, and fever) may appear, including altered mental status (confusion and reduced mental activity), […] Loss of balance problems and seizures (convulsions) may develop in brain infections. […] Brain abscesses may also occur and cause similar symptoms. […] The incubation period between exposure and symptoms is quite variable (three to 70 days, with 21 days as average) and may extend up to about two months or more according to some reports. […] Pregnant women who are otherwise healthy usually have only minor symptoms. However, Listeria infection during pregnancy often cause problems for the fetus: miscarriage, stillbirth, premature birth, or cause infection and, potentially, death of newborns.
  • #1 Listeria (Listeriosis): Signs, Symptoms, and Treatment
    https://patient.info/infections/listeria-leaflet
    Infected newborn babies may show signs of infection at birth or first show signs of infection during the first few days of life. Infection in newborn babies can be very severe and can include lung infection (pneumonia) and meningitis. Infected babies may have severe difficulty with breathing and feeding. […] Most cases of listeriosis in healthy adults and children are mild and only last for a short time with full recovery. […] Infection in babies often has a poor outlook. There is a significant risk of the baby dying, or long-term complications and delayed development may occur in those babies who do survive. This is why it is so important to make efforts to avoid listeria when you are pregnant.
  • #1 Listeriosis (Listeria infection)
    https://www.health.ny.gov/diseases/communicable/listeriosis/fact_sheet.htm
    Listeriosis is an infection caused by the bacteria Listeria monocytogenes. People become infected by eating foods contaminated with the bacteria. Listeria may infect many different sites in the body, such as the brain, spinal cord membranes, or the bloodstream. […] Because listeriosis can affect many different parts of the body, the symptoms vary from mild to severe. Listeria can cause fever and diarrhea (loose stool/poop) similar to other foodborne germs, but this type of Listeria infection is rarely diagnosed. Symptoms vary in people with invasive listeriosis, meaning the bacteria has spread beyond the gut. Symptoms typically start 1 to 4 weeks after eating food contaminated with Listeria. […] Pregnant women typically experience only fever and other flu-like symptoms, such as fatigue and muscle aches. However, infections during pregnancy can lead to miscarriage, stillbirth, premature delivery, or life-threatening infection of the newborn. […] Symptoms can include headache, stiff neck, confusion, loss of balance, and convulsions, in addition to fever and muscle aches.
  • #1 Symptoms of Listeria Infection | Listeria Infection | CDC
    https://www.cdc.gov/listeria/signs-symptoms/index.html
    Listeria bacteria can cause an infection called listeriosis. Signs and symptoms of listeriosis depend on the person infected, and the body part affected. Listeria are most likely to harm pregnant women, newborns, older adults, and people with weakened immune systems. Other people can be infected with Listeria, but they rarely become seriously ill. […] Symptoms of invasive illness usually start within 2 weeks after eating food contaminated with Listeria. […] Symptoms typically include Fever, Flu-like symptoms, such as muscle aches and fatigue. […] Symptoms typically include Fever, Flu-like symptoms, such as muscle aches and fatigue, Headache, Stiff neck, Confusion, Loss of balance, Seizures. […] Symptoms in pregnant women are usually mild. Some pregnant women never have symptoms. However, infection during pregnancy usually leads to miscarriage, stillbirth, premature delivery, or life-threatening infection of the newborn.
  • #1 Caring for Patients with Listeriosis | Listeria Infection | CDC
    https://www.cdc.gov/listeria/hcp/clinical-care/index.html
    Symptoms may include fever and myalgias, often preceded by diarrhea or other gastrointestinal symptoms. In older adults and immunocompromised people, symptoms of listeriosis can include headache, stiff neck, confusion, loss of balance, and convulsions. […] An exposed person with elevated risk of invasive listeriosis with fever (100.6 F, 38.1 C) and signs and symptoms consistent with listeriosis, for whom no other cause of illness is known, should be tested and treated for presumptive listeriosis. […] Most experts believe that no testing or treatment is indicated for an asymptomatic person with elevated risk of invasive listeriosis who ate a product recalled because of L. monocytogenes contamination and experienced symptoms that have resolved. Any such patient should be instructed to return for medical care if they develop symptoms of listeriosis within 2 months after eating the recalled product.
  • #1 Listeria and Pregnancy | ACOG
    https://www.acog.org/womens-health/faqs/listeria-and-pregnancy
    Listeriosis can cause mild, flu-like symptoms such as fever, chills, muscle aches, and diarrhea or upset stomach. You also may have a stiff neck, headache, confusion, or loss of balance. Symptoms may appear as late as 2 months after you have eaten something with Listeria. Many pregnant women do not have any symptoms. Even if you do not feel sick, you can pass the infection to your fetus. […] Pregnant women are 10 times more likely to get listeriosis than the general population. Vomiting and diarrhea can cause the body to lose too much water. This is called dehydration. Listeriosis also can cause miscarriage, stillbirth, or preterm labor.
  • #1 Listeria (Listeriosis) | FDA
    https://www.fda.gov/food/foodborne-pathogens/listeria-listeriosis
    Listeriosis has a range of symptoms that can vary based on the severity and form of the illness. […] For the less severe, non-invasive listeriosis, mild symptoms such as fever, muscle aches, nausea, vomiting, and diarrhea may occur, and often persists for 1 to 3 days. […] For the more severe, life-threatening invasive form of the disease, symptoms may include headache, stiff neck, confusion, loss of balance, and convulsions. Invasive listeriosis is a potentially life-threatening event, especially for newborns, adults over the age of 65, and those with weakened immune systems. […] Symptoms of listeriosis during pregnancy may be mild or even go unnoticed, but can lead to severe outcomes, such as miscarriage, stillbirth, premature delivery, or a life-threatening infection of the newborn. […] You should immediately consult with your healthcare provider if you suspect you’ve developed symptoms that resemble a listeriosis infection.
  • #1 What are the Symptoms of Listeria and How is it Properly Diagnosed? What are the Survival Rates for Patients with Listeriosis? | Food Poisoning News
    https://www.foodpoisoningnews.com/what-are-the-symptoms-of-listeria-and-how-is-it-properly-diagnosed-what-are-the-survival-rates-for-patients-with-listeriosis/
    The symptoms of listeriosis can vary significantly based on the individuals health status, age, and the affected body part. Generally, symptoms appear within a few days to weeks after consuming contaminated food, with an incubation period ranging from 3 to 70 days. For most healthy adults, listeriosis may cause mild symptoms or may even be asymptomatic. When symptoms do occur, they often resemble a mild case of gastroenteritis and can include fever, muscle aches, nausea, vomiting, and, less commonly, diarrhea. These symptoms are usually self-limiting and may resolve without medical intervention. […] However, in high-risk populations, listeriosis can progress to a more severe and invasive form of the disease. In such cases, listeria can spread to the bloodstream, causing septicemia, or to the central nervous system, leading to meningitis or encephalitis. When the bloodstream is affected, patients often experience a sudden onset of high fever, chills, low blood pressure, and a rapid heart rate. The bodys systemic response to the infection can quickly escalate, necessitating immediate medical attention.
  • #1 Listeria Monocytogenes Infection (Listeriosis): Background, Pathophysiology, Epidemiology
    https://emedicine.medscape.com/article/220684-overview
    Listeria monocytogenes, which causes listeriosis, is an important pathogen in pregnant patients, neonates, elderly individuals, and immunocompromised individuals, although it is an uncommon cause of illness in the general population. […] The most common clinical manifestation is diarrhea. A mild presentation of fever, nausea, vomiting, and diarrhea may resemble a gastrointestinal illness. […] Bacteremia and meningitis are more serious manifestations of disease that can affect individuals at high risk. Unless recognized and treated, Listeria infections can result in significant morbidity and mortality. […] Healthy individuals may experience minor gastrointestinal symptoms when infected with Listeria. However, immunocompromised individuals are at risk for more severe infections, such as bacteraemia and meningitis, whereas pregnant people may experience miscarriage and stillbirth. Vulnerable populations, such as the elderly and pregnant women, have a mortality rate of 20-30% when infected with Listeria. […] CNS infection may manifest as meningitis, meningoencephalitis, or abscess. Endocarditis is another possible presentation. Localized infection may manifest as septic arthritis, osteomyelitis, and, rarely, pneumonia.
  • #1 Listeria Questions and Answers | Food Safety and Inspection Service
    http://www.fsis.usda.gov/food-safety/foodborne-illness-and-disease/illnesses-and-pathogens/listeria
    The symptoms of listeriosis are diverse and range from mild to serious. Listeriosis is especially dangerous for at-risk groups such as pregnant women and their unborn babies, newborns, older adults, those with weakened immune systems. People receiving some medical treatments, such as chemotherapy for treatment of cancer, are at high risk. […] Pregnant women typically experience only fever and other flu-like symptoms, such as fatigue and muscle aches. However, infections during pregnancy can lead to miscarriage, stillbirth, premature delivery, or life-threatening infection of the newborn. People who are not pregnant may experience symptoms that include headache, stiff neck, confusion, loss of balance, and convulsions, in addition to fever and muscle aches. […] Gastrointestinal symptoms usually appear within a few hours to 2 to 3 days but can sometimes appear 2 to 6 weeks after eating the contaminated food. In some cases, it may take up to 2 months for symptoms to appear. In healthy individuals, listeriosis typically causes mild symptoms which last for only a few days. Listeriosis can also cause death in people with weakened immune systems and the elderly. […] Contact your healthcare provider if you’re experiencing one or more of the mentioned symptoms, and suspect you’ve eaten food that was possibly contaminated with Listeria within the past 2 months.
  • #1 Listeriosis in Human Pregnancy: a systematic review
    https://pmc.ncbi.nlm.nih.gov/articles/PMC3593057/
    Listeriosis is associated with high morbidity and mortality. Pregnant women are at high risk for listeriosis, but symptoms are non-specific and diagnosis is difficult. The presentation of listeriosis during pregnancy includes mild flu-like symptoms. In a series of 191 cases of listeriosis in pregnancy, 32% of women had symptoms of a flu-like illness, 65% had a fever, and other symptoms included backache (21.5%), headache (10.5%), vomiting/diarrhea (7%), muscle pains (4%) and sore throat (4%). Approximately 29% of the women were asymptomatic. Listeriosis during pregnancy carries a poorer prognosis for fetuses who are affected at early gestations as opposed to later gestations, and commonly results in spontaneous abortion or stillbirth. Preterm birth is common, and the highest mortality rate is predictably among infants born at the earliest gestations. Neonatal listeriosis occurs in approximately 8.6/100,000 of live births, and is one of the most common causes of neonatal meningitis. The clinical manifestations of neonatal listeriosis are similar to GBS, and there is a high mortality rate (20-60%). Symptoms of early-onset listeriosis occur at a mean of 36 hours after birth. In 50-74% of cases, the mother is likely to have had a flu-like illness with symptoms of fever, headache and myalgia. Neonates with early-onset infection are more frequently born preterm and associated with chorioamnionitis. The fetus presents with clinical features like septicaemia (81-88%), respiratory distress or pneumonia (38%), meningitis (24%) and occasionally disseminated inflammatory granulomata. Late-onset neonatal listeriosis tends to occur between five days and two or more weeks postpartum, typically in term neonates. The clinical features may be non-specific, but septicaemia (17-95%) and meningitis (67-93%) are common.
  • #1 Listeria Infection (Listeriosis): Symptoms, Treatment, and More
    https://www.healthline.com/health/listeria-infection
    People with invasive listeriosis often do not experience the first symptoms until 1 to 4 weeks after exposure to Listeria bacteria. In some cases, it can take as long as 90 days for symptoms to appear. […] If you’re pregnant, you may not have any symptoms or the symptoms may be so mild that you don’t realize you have listeriosis. […] Additionally, as in invasive listeriosis, symptoms can take a while to show up, often between 19 to 28 days. This can make diagnosing listeriosis in pregnant people difficult. […] When present, the typical symptoms of listeriosis in a pregnant person are flu-like, including: fever, with or without chills, fatigue, body aches, diarrhea. […] Symptoms of listeriosis in a newborn can include: fever, diarrhea, vomiting, poor feeding, lethargy, irritability, low birth weight.
  • #1 Management of Pregnant Women With Presumptive Exposure to Listeria monocytogenes | ACOG
    https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2014/12/management-of-pregnant-women-with-presumptive-exposure-to-listeria-monocytogenes
    Maternal infection may present as a nonspecific, flu-like illness with fever, myalgia, backache, and headache, often preceded by diarrhea or other gastrointestinal symptoms. […] However, fetal and neonatal infections can be severe, leading to fetal loss, preterm labor, neonatal sepsis, meningitis, and death. […] Maternal infection may be asymptomatic. When it is symptomatic, infection generally presents as a nonspecific, flu-like illness with fever, myalgia, backache, and headache, often preceded by diarrhea or other gastrointestinal symptoms. […] Listeriosis is predominantly a foodborne illness caused by consumption of food contaminated with the bacterium listeria. Pregnant women are about 13 times more likely than the general population to get listeriosis. […] Diagnosis is made primarily by blood culture.
  • #1 Listeria Infection (Listeriosis): Signs and Symptoms
    https://www.health.com/listeria-infection-8582021
    Depending on the type and severity of listeriosis, symptoms can last for days to several weeks. […] Symptoms of invasive listeriosis can take up to two months to develop but usually appear within several days after eating contaminated foods. Symptoms can be severe and may include: Fever, Muscle aches, Fatigue, Severe headache, Confusion, Stiff neck, Loss of balance, Vomiting, Seizures. […] Symptoms of invasive listeriosis can vary, depending on which body system or organ the infection affects. […] Symptoms of Listeria infection are generally mild in pregnant people, and some have no symptoms at all. When symptoms occur, they are flu-like and can include: Fever, Chills, Muscle aches, Joint pain, Fatigue, Diarrhea, Upset stomach, Headache. […] Symptoms of listeriosis in infants can include: Listlessness (e.g., sluggish, drowsiness, sleepy), Vomiting, Jaundice (yellow-tinted eyes and skin), Skin rash, Breathing problems (e.g., rapid breathing, grunting), Poor appetite.
  • #1 Listeria in Pregnancy – Risks, Treatment & Prevention
    https://americanpregnancy.org/healthy-pregnancy/pregnancy-concerns/listeria-during-pregnancy/
    How Will I Know If I Have Listeriosis? Symptoms of listeriosis may show up 2-30 days after exposure. Symptoms of listeria in pregnant women include mild flu-like symptoms, headaches, muscle aches, fever, nausea, and vomiting. If the infection spreads to the nervous system it can cause a stiff neck, disorientation, or convulsions. Infection can occur at any time during pregnancy, but it is most common during the third trimester when your immune system is somewhat suppressed. Be sure to contact your health care provider if you experience any of these symptoms. A blood test can confirm an infection from listeriosis. […] If you are pregnant and are infected with listeriosis, you are at an increased risk of: Miscarriage, Premature delivery, Infection to the newborn, Death to the newborn (about 22% of cases of perinatal listeriosis result in stillbirth or neonatal death). Early treatment with antibiotics may prevent fetal infection and other severe fetal complications. Not all babies whose mothers are infected will have any problems related to listeriosis.
  • #1 Get the Facts about Listeria | FDA
    https://www.fda.gov/animal-veterinary/animal-health-literacy/get-facts-about-listeria
    Pregnant women are 18 times more likely to get listeriosis than other healthy adults, and 16 to 27% of all L. monocytogenes infections are in pregnant women. […] Diagnosing listeriosis in pregnant women is difficult because they usually don’t have the gastrointestinal symptoms such as vomiting and diarrhea that are normally seen with a foodborne illness. The most common, and sometimes only, symptom of listeriosis in pregnant women is fever. […] Compared to listeriosis in non-pregnant people, the disease in pregnant women has a longer incubation period—the length of time between when a person ingests the bacteria and first shows symptoms. […] While listeriosis in the mother is mild, infection in the fetus and newborn can be severe. Listeriosis can develop at any time during pregnancy, and the disease causes miscarriage, stillbirth, premature birth, and life-threatening infection of the newborn, such as a blood infection, respiratory distress or pneumonia, and meningitis.
  • #1
  • #1 Listeriosis
    https://dermnetnz.org/topics/listeriosis
    Listeriosis is a bacterial infection caused by the bacteria Listeria monocytogenes. Listeriosis is typically a food-borne illness and usually affects those with impaired immunity. Its presentation may range from febrile gastroenteritis to potentially fatal invasive disease, including sepsis, central nervous system infection, and perinatal infection. […] In immunocompetent individuals, non-invasive listeriosis typically manifests as febrile gastroenteritis with self-limiting nausea, vomiting, and diarrhoea. […] In older patients and those with impaired immunity, invasive listeriosis most frequently presents as sepsis or central nervous system infection with fever and neurological signs. […] Maternal T-cell immunity is most affected during the third trimester and this is when listeriosis in pregnancy typically occurs.
  • #1 Listeria Infection (Listeriosis): Symptoms, Treatment, and More
    https://www.healthline.com/health/listeria-infection
    Early onset listeriosis happens within 6 days of birth. A newborn acquires the infection from their parents placenta. Early onset infections typically cause meningitis, septicemia (blood infection), and pneumonia. […] Late onset listeriosis happens between 7 to 28 days after birth. Medical professionals believe newborns with this type of listeriosis get the infection during delivery or due to an exposure in the hospital. It tends to cause meningitis and septicemia.
  • #1 Listeriosis in Newborns – Children’s Health Issues – Merck Manual Consumer Version
    https://www.merckmanuals.com/home/children-s-health-issues/infections-in-newborns/listeriosis-in-newborns
    Listeriosis in newborns can be acquired in the womb or during or after delivery. […] Symptoms vary but may include listlessness and poor feeding. […] In newborns, symptoms of listeriosis are like those of sepsis (a blood infection) and include listlessness and poor feeding. Symptoms may appear within hours or days of birth (called early onset) or may be delayed up to several weeks (called late onset). Newborns who have symptoms that appear early frequently have a low birth weight, problems at delivery, and symptoms of sepsis soon after birth. Newborns who have symptoms that appear late are usually full-term and initially healthy but then develop meningitis (a brain infection) or sepsis. […] Listeriosis is fatal in approximately 7 to 29% of affected newborns. The fatality rate is higher among newborns who have early-onset listeriosis.
  • #1
    https://www.healthychildren.org/English/health-issues/conditions/infections/Pages/listeriosis-infection.aspx
    Listeria symptoms can include fever and diarrhea. People rarely become seriously ill; most recover on their own without medical care. Symptoms usually begin within 24 hours after eating the contaminated food and can last two to three days. […] Severe illness is less common and develops one to four weeks after eating contaminated food, sometimes later. Serious childhood cases of listeriosis can lead to meningitis. Listeriosis can be serious for pregnant people and cause pregnancy loss or premature birth. In pregnant people, symptoms may include fever, fatigue, muscle aches and intestinal problems, or they may have no symptoms of infection. Infections also can be serious or deadly for infants. Symptoms of listeriosis in an infant may include: Listlessness (sleepy, drowsy, sluggish), Vomiting, Loss of appetite, Yellow color of the skin and eyes (jaundice), Skin rash, Breathing problems.
  • #1 What Are the Symptoms of Listeria Infection? | Marler Clark
    https://marlerclark.com/foodborne-illnesses/listeria/listeria-symptoms-risks
    Newborns may present clinically with early-onset (less than 7 days) or late-onset forms of infection (7 or more days). Those with the early-onset form are often diagnosed in the first 24 hours of life with septicemia, meningitis, or respiratory distress and have a higher mortality rate. Early-onset listeriosis is most often acquired through trans-placental transmission. Late-onset neonatal listeriosis is less common and less severe than the early-onset form. Clinical symptoms may be subtle and include irritability, fever, poor feeding, and meningitis. The mode of acquisition of late-onset listeriosis is poorly understood.
  • #1 Listeriosis: MedlinePlus Medical EncyclopediaLock
    https://medlineplus.gov/ency/article/001380.htm
    Listeriosis is an infection that can occur when a person eats food that has been contaminated with bacteria called Listeria monocytogenes (L monocytogenes). […] The bacteria most often cause a gastrointestinal illness. In some cases, you can develop a blood infection (septicemia) or inflammation of the covering of the brain (meningitis). Infants and children often have meningitis. […] In infants, symptoms of listeriosis may be seen in the first few days of life and may include: Loss of appetite, Lethargy, Jaundice, Respiratory distress (usually pneumonia), Shock, Skin rash, Vomiting. […] Listeriosis in a fetus or infant is often fatal. Healthy older children and adults are more likely to survive. The illness is less serious if it only affects the gastrointestinal system. Brain or spinal infections have worse outcomes. […] Infants who survive listeriosis may have long-term brain and nervous system (neurologic) damage and delayed development. […] Contact your health care provider if you or your child develops symptoms of listeriosis.
  • #1 Listeriosis
    https://dermnetnz.org/topics/listeriosis
    Mothers tend to develop flu-like symptoms but may be asymptomatic. […] Perinatal infection can result in miscarriage, stillbirth, preterm delivery, neonatal sepsis, or meningitis. […] Neonatal listeriosis may be classified as early-onset, which occurs within the first week of life and is most often associated with sepsis, or late-onset, which is commonly associated with meningitis. […] Granulomatosis infantisepticum is a severe form of generalised neonatal infection, which can cause granulomatous lesions involving multiple organs, including the skin. […] Cutaneous listeriosis typically presents as purpuric, papulopustular, or vesiculopustular eruptions that are painless and non-pruritic. […] Many patients experience systemic symptoms, of which fever is the most common. […] The median time from exposure to the onset of rash is 2 days.
  • #1 Listeriosis | Washington State Department of Health
    https://doh.wa.gov/you-and-your-family/illness-and-disease-z/listeriosis
    Usual symptoms of listeriosis include fever, muscle aches, diarrhea, and an upset stomach. Mild illnesses are generally not diagnosed. More serious infections cause severe headache, stiff neck, confusion, loss of balance, or convulsions. […] Although pregnant women often have a mild, flu-like illness, listeriosis can cause miscarriages, premature births or still-births. Symptoms can appear from three to 70 days after exposure. About half of infected people have symptoms within three weeks.
  • #1 Listeriosis – National Collaborating Centre for Infectious Diseases
    https://nccid.ca/debrief/listeriosis/
    Severe cases of listeriosis can lead to brain infections like meningitis or encephalitis, as well as blood poisoning (septicemia). […] Common symptoms associated with the more severe forms of listeriosis include headache, stiff neck, confusion, loss of balance, and convulsions. […] The more severe forms of the disease may take anywhere from three days to three months to fully develop.
  • #1 Listeria and listeriosis | healthdirect
    https://www.healthdirect.gov.au/listeria-and-listeriosis
    Listeriosis can cause symptoms such as: […] Symptoms of listeriosis include fever, nausea, headaches, tiredness and muscle aches and pains. […] Listeriosis can take weeks or even months to develop after you have been exposed to the bacteria. […] Symptoms of listeriosis are usually mild. However in rare cases, listeria can lead to serious complications such as septicaemia or meningitis. These conditions can be life-threatening. […] Meningitis affects the central nervous system and can cause symptoms such as: […] Listeriosis can be treated with antibiotics.
  • #1 Listeriosis
    https://www.ourhealthhb.nz/conditions-treatments/infectious-diseases/listeriosis
    In most people, listeriosis has no symptoms or only causes mild symptoms for a few days, such as: fever, muscle aches, feeling sick (nausea) or throwing up (vomiting), runny poos (diarrhoea). […] Symptoms usually start between 3 to 70 days (5 weeks) after eating contaminated food. The average time for symptoms is 21 days.
  • #1 What are the first signs of Listeria? | Marler Clark
    https://marlerclark.com/news_events/what-are-the-first-signs-of-listeria
    When a person is infected and develops symptoms of Listeria infection, the resulting illness is called listeriosis. […] On the mild end of the spectrum, listeriosis usually consists of the sudden onset of fever, chills, severe headache, vomiting, and other influenza-type symptoms. […] The amount of time from infection to the onset of symptoms typically referred to as the incubation period can vary to a significant degree. Symptoms of Listeria infection can develop at any time from 2 to 70 days after eating contaminated food. […] As already noted, when pregnant, women have a mildly impaired immune system that makes them susceptible to Listeria infection. If infected, the illness appears as an acute fever, muscle pain, backache, and headache. […] Newborns may present clinically with early-onset (less than 7 days) or late-onset forms of infection (7 or more days). Those with the early-onset form are often diagnosed in the first 24 hours of life with sepsis (infection in the blood). Early-onset listeriosis is most often acquired through trans-placental transmission. Late-onset neonatal listeriosis is less common than the early-onset form. Clinical symptoms may be subtle and include irritability, fever, and poor feeding.
  • #1 Listeria: How to protect yourself from this common cause of food poisoning – Harvard Health
    https://www.health.harvard.edu/diseases-and-conditions/emlisteriaem-how-to-protect-yourself-from-this-common-cause-of-food-poisoning
    Listeria infection is a food-borne illness caused by bacteria called Listeria monocytogenes. A Listeria infection is also called listeriosis. Most people develop listeriosis from eating contaminated foods. […] The symptoms of listeriosis vary depending on whether the infection is limited to the gastrointestinal (GI) tract or has spread beyond the gut. People infected with Listeria may feel symptoms within a few hours or days after eating contaminated food. Intestinal symptoms include diarrhea and vomiting. Symptoms usually resolve within three days, and most people feel better with rest and drinking plenty of fluids. […] Invasive listeriosis, the term for listeriosis that spreads beyond the GI tract, can take several weeks to cause symptoms. Symptoms of invasive Listeria infection include: fever, muscle aches, fatigue, headache, stiff neck, gastroenteritis, confusion, loss of balance, seizures. A severe Listeria infection may spread to the bloodstream or brain. Severe infections may cause life-threatening conditions such as sepsis, meningitis, or encephalitis.
  • #1
    https://myhealth.alberta.ca/Health/pages/conditions.aspx?hwid=ug2074
    The symptoms of listeriosis include fever, muscle aches, and sometimes nausea or diarrhea. If infection spreads to the nervous system, symptoms such as headache, stiff neck, confusion, loss of balance, or convulsions can occur. […] An otherwise healthy person who is not pregnant typically does not need treatment. Symptoms will usually go away within a few weeks.
  • #1 Management of Pregnant Women With Presumptive Exposure to Listeria monocytogenes | ACOG
    https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2014/12/management-of-pregnant-women-with-presumptive-exposure-to-listeria-monocytogenes
    Listeria survives and grows within host cells, so infection does not respond favorably to bacteriostatic antibiotics. The antimicrobial regimen of choice for treatment of listeriosis is high-dose intravenous ampicillin (at least 6 g/day) for nonallergic patients for at least 14 days. […] Initiating a program of fetal surveillance seems prudent for women in whom listeriosis is diagnosed or strongly suspected because of exposure and fever with or without other symptoms, although studies and data do not exist to point to one best plan for such testing.
  • #1 Listeria Infection (Listeriosis) FAQs | Texas DSHS
    https://www.dshs.texas.gov/foodborne-illness/listeria-infection-listeriosis/listeria-infection-listeriosis-faqs
    Because the symptoms of listeriosis can take days or weeks to appear and the physical signs are not always obvious, it’s very important to follow food safety precautions consistently during pregnancy. […] Early diagnosis and treatment with high doses of antibiotics can prevent infection of the unborn baby and result in the birth of a healthy infant.
  • #1
    https://consensus.app/questions/what-symptoms-listeriosis/
    Listeriosis, caused by the bacterium Listeria monocytogenes, presents a range of symptoms that can vary significantly depending on the affected population. The most frequently reported symptom across various studies is fever, which is observed in a majority of cases. Other common symptoms include muscle aches and gastrointestinal issues such as nausea and diarrhea. […] When the infection spreads to the nervous system, more severe symptoms can occur. These include headaches, stiff neck, confusion, loss of balance, and convulsions. In cases of neurolisteriosis, patients often exhibit altered consciousness and higher white blood cell counts, indicating a more severe infection. […] Pregnant women and their newborns are particularly vulnerable to listeriosis. Pregnant women often experience flu-like symptoms, including fever, headache, and myalgia, which can lead to more severe outcomes such as premature labor and stillbirth. Newborns infected with listeriosis may present with respiratory distress, fever, and sepsis, and are at high risk for meningitis.
  • #2 What to know about listeria infection (listeriosis) during pregnancy
    https://www.babycenter.com/pregnancy/health-and-safety/listeriosis-during-pregnancy_9528
    Listeriosis symptoms include fever, fatigue, muscle aches, diarrhea, stiff neck, headache and confusion. It can cause preterm birth and other serious complications. […] Symptoms of listeriosis may appear a week to a month after eating contaminated food, or they may not show up for a couple of months. Many pregnant women have no listeria symptoms or only mild, flu-like symptoms if they become infected. Even without symptoms, you can pass the bacteria on to your baby. […] Listeriosis symptoms can include: Fever, Fatigue, Muscle aches, Upset stomach or diarrhea, Stiff neck, Headache, Confusion. […] Call your practitioner immediately if you have any symptoms of listeriosis.
  • #2 Listeria Infection (Listeriosis): Signs and Symptoms
    https://www.health.com/listeria-infection-8582021
    Listeria infection, or listeriosis, is a serious but uncommon foodborne illness that develops after eating food contaminated with Listeria monocytogenes bacteria. In otherwise healthy people, the infection causes flu-like symptoms such as diarrhea, fever, muscle pain, and headache within a few hours or up to three days after eating contaminated food. […] Pregnant people, infants, older adults, and people with weakened immune systems are vulnerable to a more severe Listeria infection known as invasive listeriosis. In these high-risk groups, the bacteria can spread from the intestines into the bloodstream, affecting any body part, including the brain and spinal cord. Symptoms of invasive listeriosis can take three days to three months to develop and can include fever, muscle aches, confusion, stiff neck, balance problems, and seizures (convulsions).
  • #2 Listeria: How to protect yourself from this common cause of food poisoning – Harvard Health
    https://www.health.harvard.edu/diseases-and-conditions/emlisteriaem-how-to-protect-yourself-from-this-common-cause-of-food-poisoning
    Listeria infection is a food-borne illness caused by bacteria called Listeria monocytogenes. A Listeria infection is also called listeriosis. Most people develop listeriosis from eating contaminated foods. […] The symptoms of listeriosis vary depending on whether the infection is limited to the gastrointestinal (GI) tract or has spread beyond the gut. People infected with Listeria may feel symptoms within a few hours or days after eating contaminated food. Intestinal symptoms include diarrhea and vomiting. Symptoms usually resolve within three days, and most people feel better with rest and drinking plenty of fluids. […] Invasive listeriosis, the term for listeriosis that spreads beyond the GI tract, can take several weeks to cause symptoms. Symptoms of invasive Listeria infection include: fever, muscle aches, fatigue, headache, stiff neck, gastroenteritis, confusion, loss of balance, seizures. A severe Listeria infection may spread to the bloodstream or brain. Severe infections may cause life-threatening conditions such as sepsis, meningitis, or encephalitis.
  • #2 Listeriosis Fact Sheet – MN Dept. of Health
    https://www.health.state.mn.us/diseases/listeriosis/listeria.html
    Common symptoms of listeriosis include fever, muscle aches, nausea, and diarrhea. If the infection spreads to the nervous system, other symptoms may develop, including headache, stiff neck, confusion, loss of balance, and convulsions. […] Symptoms usually begin about 3 weeks after being exposed to Listeria. People who are not in the high-risk categories usually have no symptoms and suffer no ill effects from the infection.
  • #2 Listeriosis in Human Pregnancy: a systematic review
    https://pmc.ncbi.nlm.nih.gov/articles/PMC3593057/
    Listeriosis is associated with high morbidity and mortality. Pregnant women are at high risk for listeriosis, but symptoms are non-specific and diagnosis is difficult. The presentation of listeriosis during pregnancy includes mild flu-like symptoms. In a series of 191 cases of listeriosis in pregnancy, 32% of women had symptoms of a flu-like illness, 65% had a fever, and other symptoms included backache (21.5%), headache (10.5%), vomiting/diarrhea (7%), muscle pains (4%) and sore throat (4%). Approximately 29% of the women were asymptomatic. Listeriosis during pregnancy carries a poorer prognosis for fetuses who are affected at early gestations as opposed to later gestations, and commonly results in spontaneous abortion or stillbirth. Preterm birth is common, and the highest mortality rate is predictably among infants born at the earliest gestations. Neonatal listeriosis occurs in approximately 8.6/100,000 of live births, and is one of the most common causes of neonatal meningitis. The clinical manifestations of neonatal listeriosis are similar to GBS, and there is a high mortality rate (20-60%). Symptoms of early-onset listeriosis occur at a mean of 36 hours after birth. In 50-74% of cases, the mother is likely to have had a flu-like illness with symptoms of fever, headache and myalgia. Neonates with early-onset infection are more frequently born preterm and associated with chorioamnionitis. The fetus presents with clinical features like septicaemia (81-88%), respiratory distress or pneumonia (38%), meningitis (24%) and occasionally disseminated inflammatory granulomata. Late-onset neonatal listeriosis tends to occur between five days and two or more weeks postpartum, typically in term neonates. The clinical features may be non-specific, but septicaemia (17-95%) and meningitis (67-93%) are common.
  • #2 Symptoms of listeriosis (Listeria) – Canada.ca
    https://www.canada.ca/en/public-health/services/diseases/listeriosis/symptoms-listeriosis.html
    Symptoms of listeriosis can start as early as 3 days after eating contaminated food. You may have the following symptoms: fever, nausea, cramps, diarrhea, vomiting, headache, constipation, muscle aches. […] In severe cases, the bacteria can spread to the nervous system (the brain, spinal cord and nerves). Symptoms of severe listeriosis include: stiff neck, confusion, headache, loss of balance. […] Symptoms of severe listeriosis may appear up to 70 days after you have been exposed to Listeria.
  • #2 Listeria Infection: Signs and Symptoms
    https://www.everydayhealth.com/listeria/symptoms-diagnosis/
    For these patients, their healthy immune system takes care of the invading listeria bacteria without much fuss. But if symptoms do emerge, they tend to resemble a mild flu or gastrointestinal (GI) bug. […] Those symptoms may include: Fever, Watery diarrhea, Nausea, Headache, Aches in joints or muscles. […] In some people, symptoms may take up to two months to emerge, Dr. Danoff says. But typically, symptoms show up 24 hours after someone has eaten a food contaminated with Listeria monocytogenes (the specific strain of Listeria that makes people sick). Those symptoms tend to last between one and three days before subsiding on their own. […] These symptoms are what doctors refer to as nonspecific meaning theyre associated with many different ailments and so are not an obvious sign of listeriosis. Also, because these symptoms resolve on their own, most cases of listeriosis in healthy adults are likely never formally diagnosed.
  • #2 Listeria: Signs, Symptoms, and Complications
    https://www.verywellhealth.com/listeria-symptoms-4570901
    Not everyone who gets infected with Listeria will have symptoms. However, you are more likely to be hospitalized with the symptoms of Listeria than with the symptoms of other stomach bugs like norovirus or salmonella. […] The bacteria can cause some pretty unpleasant gastrointestinal distress like diarrhea, abdominal cramps, and fever. Pregnant people are at particularly high risk due to susceptibility listeria infection and consequences of a severe case. […] Most healthy adults (including pregnant people) and children infected with the bacteria wont show any signs at all. When they do, the symptoms they experience often resemble a mild case of the flu or gastrointestinal discomfort and include: Fever, Diarrhea, Headache, Nausea and/or vomiting, Fatigue, Muscle aches, Abdominal cramps, Meningitis, Strokes.
  • #2 Listeriosis – Knowledge @ AMBOSS
    https://www.amboss.com/us/knowledge/listeriosis/
    Most infections are asymptomatic or mild, especially in immunocompetent individuals. […] Invasive disease due to bacteria spreading beyond the gastrointestinal tract results in most symptoms and generally develops in high-risk groups, e.g., older adults, pregnant individuals, and those who are immunocompromised. […] In immunocompromised and older individuals, fever, headache, muscle aches, fatigue, nausea, vomiting, watery diarrhea, sepsis, and Listeria meningitis can occur. […] Listeria meningitis can present with neck stiffness, mental status change, impaired consciousness (even coma), tremor, ataxia, and seizures.
  • #2
    https://myhealth.alberta.ca/Health/pages/conditions.aspx?hwid=ug2074
    The symptoms of listeriosis include fever, muscle aches, and sometimes nausea or diarrhea. If infection spreads to the nervous system, symptoms such as headache, stiff neck, confusion, loss of balance, or convulsions can occur. […] An otherwise healthy person who is not pregnant typically does not need treatment. Symptoms will usually go away within a few weeks.
  • #2 Listeriosis
    https://www.ourhealthhb.nz/conditions-treatments/infectious-diseases/listeriosis
    In most people, listeriosis has no symptoms or only causes mild symptoms for a few days, such as: fever, muscle aches, feeling sick (nausea) or throwing up (vomiting), runny poos (diarrhoea). […] Symptoms usually start between 3 to 70 days (5 weeks) after eating contaminated food. The average time for symptoms is 21 days.
  • #2 Listeria Infection (Listeriosis): Signs and Symptoms
    https://www.health.com/listeria-infection-8582021
    Depending on the type and severity of listeriosis, symptoms can last for days to several weeks. […] Symptoms of invasive listeriosis can take up to two months to develop but usually appear within several days after eating contaminated foods. Symptoms can be severe and may include: Fever, Muscle aches, Fatigue, Severe headache, Confusion, Stiff neck, Loss of balance, Vomiting, Seizures. […] Symptoms of invasive listeriosis can vary, depending on which body system or organ the infection affects. […] Symptoms of Listeria infection are generally mild in pregnant people, and some have no symptoms at all. When symptoms occur, they are flu-like and can include: Fever, Chills, Muscle aches, Joint pain, Fatigue, Diarrhea, Upset stomach, Headache. […] Symptoms of listeriosis in infants can include: Listlessness (e.g., sluggish, drowsiness, sleepy), Vomiting, Jaundice (yellow-tinted eyes and skin), Skin rash, Breathing problems (e.g., rapid breathing, grunting), Poor appetite.
  • #2 What Happens If You Get Listeria?
    https://www.emedicinehealth.com/what_happens_if_you_get_listeria/article_em.htm
    Listeria (listeriosis) is a potentially serious infection usually caused by eating food contaminated with the bacterium Listeria monocytogenes. Symptoms include nausea and vomiting, among others. It is usually not serious in otherwise healthy people. […] Symptoms of Listeria (listeriosis) vary depending on which part of the body is affected. Symptoms of Listeria infection in the brain and spinal cord include: Fever, Headache, Nausea and vomiting, Stiff neck, Confusion or trouble thinking, Weak muscles on one side of the body, trouble walking, or shaky hands, Seizures. […] Symptoms of Listeria infection in the bloodstream include: Fever, Chills, Dizziness, Low blood pressure, Fast heart rate, Pain in joints and muscles. […] Symptoms of Listeria infection in the digestive system include: Fever, Watery diarrhea, Nausea and vomiting, Headache, Pain in joints and muscles. […] In pregnant women, symptoms of Listeria infection may include: Miscarriage, Stillbirth, Premature delivery, Life-threatening infection of the newborn.
  • #2 Listeria Symptoms
    https://www.pritzkerlaw.com/listeria/listeria-lawsuit/listeria-symptoms/
    Recognizing Listeria symptoms may be difficult because a wide range of symptoms can be associated with the illness. The most common early manifestations of the illness are flu-like symptoms, including fever and muscle aches. Gastrointestinal symptoms such as nausea and diarrhea may accompany these, or may occur on their own. The symptoms of Listeria poisoning (listeriosis) include: […] If you suspect that you or a family member has this dangerous infection, you should see your doctor. Listeria monocytogenes food poisoning causes an estimated 500 deaths annually. […] The average length of time between eating food contaminated with this deadly pathogen and the onset of symptoms is three weeks. If you or a member of your family in an at-risk group (young children, pregnant women, the elderly, and those with depressed immune systems) is experiencing symptoms you may want to consult a physician. Because listeriosis can be treated with antibiotics, it is important to recognize an infection at an early stage.
  • #2 Factsheets – Health Protection Surveillance Centre
    https://www.hpsc.ie/a-z/gastroenteric/listeriosis/factsheets/
    Infection in a healthy adult is usually without symptoms or causes a mild flu-like illness. In immunocompromised and elderly individuals the infection can occasionally spread to the central nervous system causing meningitis and/or septicaemia, with symptoms such as headache, stiff neck, confusion, and loss of balance or convulsions. […] Infected pregnant women may have no symptoms or experience only a mild flu-like illness. However, infection during pregnancy can lead to premature labour, meningitis in the newborn or even miscarriage.
  • #2 Listeria Infection: Signs and Symptoms
    https://www.everydayhealth.com/listeria/symptoms-diagnosis/
    While any of the above GI or flu-like symptoms could show up in an older person with a listeria infection, some other signs of listeriosis include headaches, a stiff neck, confusion, loss of balance, and convulsions. […] Symptoms of Listeria Infection in Pregnant Women Can Be Mild but Should Not Be Ignored […] Listeriosis usually causes a mild, flu-like illness for pregnant women, Hunter says. This illness could include all the symptoms mentioned above. But many pregnant women have no symptoms at all. […] While a pregnant womans immune system will often handle listeria bacteria with ease, a listeria infection is very dangerous for the unborn baby, Danoff says. Miscarriage, stillbirth, premature birth, and serious illness at time of birth are all potential risks. So if someone who is pregnant is experiencing symptoms, seeing a doctor as soon as possible is important.
  • #2 What Is Listeria Monocytogenes (Listeriosis) Food Poisoning: Causes, Symptoms
    https://www.webmd.com/food-recipes/food-poisoning/what-is-listeria
    When you get a listeria infection, the signs typically include: Diarrhea, Nausea, Achy muscles, Fever. […] They could appear a few days after you eat the bad food, or they might take a couple of months to show up. If you have any of those symptoms, contact your doctor. […] If the infection spreads to your nervous system, its more serious. This severe form, called listeriosis, is fatal for 20% of people who have it. The signs could be: Headache, Stiff neck, Confusion, Loss of balance, Convulsions. […] Go for emergency care or call 911 if you or a loved one have any of these symptoms. […] When youre pregnant, you need to take special care because you have an increased risk of listeria in the blood. Call your doctor if you have: Headache, Fever, Achy muscles, Back pain with or without diarrhea.
  • #2 What are the Symptoms of Listeria and How is it Properly Diagnosed? What are the Survival Rates for Patients with Listeriosis? | Food Poisoning News
    https://www.foodpoisoningnews.com/what-are-the-symptoms-of-listeria-and-how-is-it-properly-diagnosed-what-are-the-survival-rates-for-patients-with-listeriosis/
    In cases where the central nervous system is compromised, symptoms can include severe headache, neck stiffness, confusion, and sensitivity to light. In advanced cases, the infection can progress to seizures or even coma. Pregnant women infected with Listeria often experience flu-like symptoms, such as fever, muscle aches, and fatigue, but the consequences can be far more severe for the fetus. Vertical transmission of the bacteria from mother to fetus can result in miscarriage, stillbirth, or preterm labor. Newborns infected with Listeria can present with respiratory distress, abnormal body temperature, feeding difficulties, and lethargy shortly after birth. The variability in symptoms based on the infection site and the individuals risk factors makes timely diagnosis challenging but crucial.
  • #2 Listeria: Signs, Symptoms, and Complications
    https://www.verywellhealth.com/listeria-symptoms-4570901
    Its uncommon, but listeriosis can sometimes lead to grave consequences, including multi-organ failure and death. […] According to a study published by the Centers for Disease Control and Prevention, about 21% of reported cases are fatal. This type of serious consequence occurs nearly exclusively in high-risk individuals or fetuses. […] If a mother is infected with listeria during the very late stages of pregnancy, she could spread the bacteria to her new baby in utero or while giving birth. […] Symptoms in newborns can be hard to detect but can range from mild fussiness and poor feeding to life-threatening illness. About 3 percent of newborns infected with listeria die because of it. Listeriosis symptoms in older, otherwise healthy kids are rare. […] As adults grow older, it gets harder and harder for their bodies to fight off germs. The immune system isnt as robust as it used to be, and many adults acquire chronic health conditions that can affect the bodys defenses.
  • #2 Get the Facts about Listeria | FDA
    https://www.fda.gov/animal-veterinary/animal-health-literacy/get-facts-about-listeria
    Pregnant women are 18 times more likely to get listeriosis than other healthy adults, and 16 to 27% of all L. monocytogenes infections are in pregnant women. […] Diagnosing listeriosis in pregnant women is difficult because they usually don’t have the gastrointestinal symptoms such as vomiting and diarrhea that are normally seen with a foodborne illness. The most common, and sometimes only, symptom of listeriosis in pregnant women is fever. […] Compared to listeriosis in non-pregnant people, the disease in pregnant women has a longer incubation period—the length of time between when a person ingests the bacteria and first shows symptoms. […] While listeriosis in the mother is mild, infection in the fetus and newborn can be severe. Listeriosis can develop at any time during pregnancy, and the disease causes miscarriage, stillbirth, premature birth, and life-threatening infection of the newborn, such as a blood infection, respiratory distress or pneumonia, and meningitis.
  • #2 Management of Pregnant Women With Presumptive Exposure to Listeria monocytogenes | ACOG
    https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2014/12/management-of-pregnant-women-with-presumptive-exposure-to-listeria-monocytogenes
    Maternal infection may present as a nonspecific, flu-like illness with fever, myalgia, backache, and headache, often preceded by diarrhea or other gastrointestinal symptoms. […] However, fetal and neonatal infections can be severe, leading to fetal loss, preterm labor, neonatal sepsis, meningitis, and death. […] Maternal infection may be asymptomatic. When it is symptomatic, infection generally presents as a nonspecific, flu-like illness with fever, myalgia, backache, and headache, often preceded by diarrhea or other gastrointestinal symptoms. […] Listeriosis is predominantly a foodborne illness caused by consumption of food contaminated with the bacterium listeria. Pregnant women are about 13 times more likely than the general population to get listeriosis. […] Diagnosis is made primarily by blood culture.
  • #2 Listeria and Pregnancy | ACOG
    https://www.acog.org/womens-health/faqs/listeria-and-pregnancy
    Listeriosis can cause mild, flu-like symptoms such as fever, chills, muscle aches, and diarrhea or upset stomach. You also may have a stiff neck, headache, confusion, or loss of balance. Symptoms may appear as late as 2 months after you have eaten something with Listeria. Many pregnant women do not have any symptoms. Even if you do not feel sick, you can pass the infection to your fetus. […] Pregnant women are 10 times more likely to get listeriosis than the general population. Vomiting and diarrhea can cause the body to lose too much water. This is called dehydration. Listeriosis also can cause miscarriage, stillbirth, or preterm labor.
  • #2 Listeriosis (Causes, Symptoms, and Treatment)
    https://patient.info/doctor/listeriosis
    Incubation time can vary from 3-70 days in adults and from a few days to a few weeks in infants. […] Infection in healthy children and adults, including maternal infections, may be asymptomatic. […] L. monocytogenes most often causes an influenza-like illness. More severe infection in risk groups may lead to stillbirth, septicaemia or meningoencephalitis. […] Infection of a pregnant woman early in pregnancy often leads to miscarriage. Maternal infection during pregnancy may be asymptomatic or include fever, myalgia, headache, sore throat, cough, vomiting, diarrhoea and vaginitis. […] The organism may be transmitted across the placenta. Infections in late pregnancy may lead to stillbirth or death of the infant within a few hours of birth. About half of infected infants at or near term will die.
  • #2 Listeriosis – Epidemiology
    https://www.vdh.virginia.gov/epidemiology/epidemiology-fact-sheets/listeriosis/
    Pregnant women with listeriosis typically experience fever and mild flu-like symptoms, such as fatigue and muscle aches. […] Other people, including older adults and people with weakened immune systems can develop a serious blood infection or meningitis (inflammation of the lining of the brain and spinal cord). Symptoms in these cases might include fever, muscle aches, headache, stiff neck, confusion, loss of balance, and convulsions. […] Symptoms of listeriosis generally appear about 14 weeks after exposure but might appear up to 70 days after exposure.
  • #2 What are the first signs of Listeria? | Marler Clark
    https://marlerclark.com/news_events/what-are-the-first-signs-of-listeria
    When a person is infected and develops symptoms of Listeria infection, the resulting illness is called listeriosis. […] On the mild end of the spectrum, listeriosis usually consists of the sudden onset of fever, chills, severe headache, vomiting, and other influenza-type symptoms. […] The amount of time from infection to the onset of symptoms typically referred to as the incubation period can vary to a significant degree. Symptoms of Listeria infection can develop at any time from 2 to 70 days after eating contaminated food. […] As already noted, when pregnant, women have a mildly impaired immune system that makes them susceptible to Listeria infection. If infected, the illness appears as an acute fever, muscle pain, backache, and headache. […] Newborns may present clinically with early-onset (less than 7 days) or late-onset forms of infection (7 or more days). Those with the early-onset form are often diagnosed in the first 24 hours of life with sepsis (infection in the blood). Early-onset listeriosis is most often acquired through trans-placental transmission. Late-onset neonatal listeriosis is less common than the early-onset form. Clinical symptoms may be subtle and include irritability, fever, and poor feeding.
  • #2 Listeria infection (listeriosis) – Mother To Baby | Fact Sheets – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK582795/
    Not everyone infected with Listeria will develop symptoms. Symptoms could include diarrhea, fever, muscle pain, joint pain, headache, stiff neck, backache, chills, sensitivity to bright light, and/or sore throat with fever and swollen glands. These symptoms can begin days to weeks after eating contaminated food. […] Pregnancies affected by or exposed to Listeria can have an increased chance of infection in the uterus, preterm delivery (birth before week 37) or low birth weight (weighing less than 5 pounds, 8 ounces (2500 grams) at birth. Severe infection can increase the chance of stillbirth. […] Newborn babies infected with Listeria can develop either early-onset or late-onset listeriosis. Early onset listeriosis develops 1-2 days after birth, and the baby often has signs of a serious bacterial infection. Late-onset listeriosis occurs 1-2 weeks after birth and usually includes symptoms of meningitis (a condition that causes areas of swelling around the brain and spinal cord in the baby). If not treated quickly, meningitis can lead to long-term problems for some children. Late-onset listeriosis is most likely related to Listeria present in the mother’s birth canal. Not all babies who are exposed to listeriosis during pregnancy will have problems.
  • #2 Listeria Infection (Listeriosis): Symptoms, Treatment, and More
    https://www.healthline.com/health/listeria-infection
    People with invasive listeriosis often do not experience the first symptoms until 1 to 4 weeks after exposure to Listeria bacteria. In some cases, it can take as long as 90 days for symptoms to appear. […] If you’re pregnant, you may not have any symptoms or the symptoms may be so mild that you don’t realize you have listeriosis. […] Additionally, as in invasive listeriosis, symptoms can take a while to show up, often between 19 to 28 days. This can make diagnosing listeriosis in pregnant people difficult. […] When present, the typical symptoms of listeriosis in a pregnant person are flu-like, including: fever, with or without chills, fatigue, body aches, diarrhea. […] Symptoms of listeriosis in a newborn can include: fever, diarrhea, vomiting, poor feeding, lethargy, irritability, low birth weight.
  • #2 Listeria Infection (Listeriosis) FAQs | Texas DSHS
    https://www.dshs.texas.gov/foodborne-illness/listeria-infection-listeriosis/listeria-infection-listeriosis-faqs
    Listeriosis is a disease caused by Listeria monocytogenes, a bacterium commonly found in the soil and water. […] Healthy adults and children rarely become seriously ill from Listeria infection. Symptoms may range from showing no symptoms to exhibiting diarrhea, fever, muscle pain, joint pain, headache, stiff neck, backache, chills, sensitivity to bright light, sore throat with fever, and swollen glands. […] In older children and adults, complications usually involve the central nervous system and blood stream, but may include pneumonia and endocarditis (inflammation of the lining of the heart and valves). Skin contact with Listeria can cause local abscesses or skin lesions. […] About one-third of all listeriosis cases happen during pregnancy. Hormonal changes in the pregnant woman cause changes in the immune system that lead to an increased vulnerability to listeriosis. There is a risk of miscarriage, stillbirth, uterine infection, premature labor, and death of the newborn for women infected with Listeria during pregnancy.
  • #2 Listeria symptoms and risks while pregnant | HealthPartners Blog
    https://www.healthpartners.com/blog/listeria-symptoms-causes/
    Its generally not a big deal for your personal health if you get a listeria infection while pregnant. In fact, you may not even know you have it. But if you do get listeriosis while pregnant, it can pass from you to your baby through the placenta and possibly cause serious health complications. […] The biggest listeria risk is in the first trimester, when your baby is the most vulnerable. But seemingly healthy babies born with listeriosis can still suffer serious health complications. […] Researchers dont have a lot of hard facts on listeria and pregnancy, but the medical community does know that people are up to 10 times more likely to get listeriosis during pregnancy than people who arent pregnant. Unfortunately, not enough is known about listeria transmission during pregnancy. We dont know the frequency that listeria passes to an unborn child during pregnancy, nor do we know what percentage of those unborn children have serious health outcomes. […] But we do know that early intervention can reduce the risk of listeria-related complications. So if youre pregnant, its a good idea to get tested if you have symptoms of listeriosis. If youre infected, you can have your baby tested and start antibiotics right away.
  • #2 Search our Website
    https://www.simcoemuskokahealth.org/topics/InfectiousDiseases/DiseaseInformation/FactSheetsIL/Listeriosis.aspx
    You may experience muscle aches, diarrhea, cramps, severe headache, constipation, persistent fever and sometimes vomit and nausea. Symptoms can occur from 3 to 70 days after eating contaminated food or drink, with an average incubation period of three weeks. […] In severe or high risk cases, these symptoms may be followed by meningitis encephalitis (an infection of the brain or its surrounding tissues) and/or septicemia (blood poisoning), either of which can result in death. […] Infected pregnant women may have minimal symptoms like a mild flu-like illness and not know they have passed the infection to their unborn child. This could lead to premature birth, infection of the brain (as indicated above), still birth or miscarriage. Advised to see health care provider if experiencing symptoms.
  • #2 Listeriosis (Causes, Symptoms, and Treatment)
    https://patient.info/doctor/listeriosis
    Infants with listeriosis may present in the first few days of life with poor feeding, lethargy, jaundice, vomiting, respiratory distress, skin rash and shock. Infants usually have pneumonia. The death rate is very high- 57% in one series. […] Infants presenting at age 5 days or older often present with meningitis. […] In adults, the disease is usually asymptomatic or causes mild illness such as an influenza-type illness, conjunctivitis, skin lesions or gastroenteritis. More severe infection, particularly in immunocompromised adults, may cause meningitis, pneumonia, septicaemia and endocarditis. […] Vets and farmers may develop cutaneous listeriosis, presenting as papular or pustular lesions on the arms or hands, following contact with infected animals.
  • #2 Listeriosis in Newborns – Children’s Health Issues – Merck Manual Consumer Version
    https://www.merckmanuals.com/home/children-s-health-issues/infections-in-newborns/listeriosis-in-newborns
    Listeriosis in newborns can be acquired in the womb or during or after delivery. […] Symptoms vary but may include listlessness and poor feeding. […] In newborns, symptoms of listeriosis are like those of sepsis (a blood infection) and include listlessness and poor feeding. Symptoms may appear within hours or days of birth (called early onset) or may be delayed up to several weeks (called late onset). Newborns who have symptoms that appear early frequently have a low birth weight, problems at delivery, and symptoms of sepsis soon after birth. Newborns who have symptoms that appear late are usually full-term and initially healthy but then develop meningitis (a brain infection) or sepsis. […] Listeriosis is fatal in approximately 7 to 29% of affected newborns. The fatality rate is higher among newborns who have early-onset listeriosis.
  • #2 Listeriosis: MedlinePlus Medical EncyclopediaLock
    https://medlineplus.gov/ency/article/001380.htm
    Listeriosis is an infection that can occur when a person eats food that has been contaminated with bacteria called Listeria monocytogenes (L monocytogenes). […] The bacteria most often cause a gastrointestinal illness. In some cases, you can develop a blood infection (septicemia) or inflammation of the covering of the brain (meningitis). Infants and children often have meningitis. […] In infants, symptoms of listeriosis may be seen in the first few days of life and may include: Loss of appetite, Lethargy, Jaundice, Respiratory distress (usually pneumonia), Shock, Skin rash, Vomiting. […] Listeriosis in a fetus or infant is often fatal. Healthy older children and adults are more likely to survive. The illness is less serious if it only affects the gastrointestinal system. Brain or spinal infections have worse outcomes. […] Infants who survive listeriosis may have long-term brain and nervous system (neurologic) damage and delayed development. […] Contact your health care provider if you or your child develops symptoms of listeriosis.
  • #2
    https://www.healthychildren.org/English/health-issues/conditions/infections/Pages/listeriosis-infection.aspx
    Listeria symptoms can include fever and diarrhea. People rarely become seriously ill; most recover on their own without medical care. Symptoms usually begin within 24 hours after eating the contaminated food and can last two to three days. […] Severe illness is less common and develops one to four weeks after eating contaminated food, sometimes later. Serious childhood cases of listeriosis can lead to meningitis. Listeriosis can be serious for pregnant people and cause pregnancy loss or premature birth. In pregnant people, symptoms may include fever, fatigue, muscle aches and intestinal problems, or they may have no symptoms of infection. Infections also can be serious or deadly for infants. Symptoms of listeriosis in an infant may include: Listlessness (sleepy, drowsy, sluggish), Vomiting, Loss of appetite, Yellow color of the skin and eyes (jaundice), Skin rash, Breathing problems.
  • #2 Listeria infection – Symptoms & causes – Mayo Clinic
    https://www.mayoclinic.org/diseases-conditions/listeria-infection/symptoms-causes/syc-20355269
    Symptoms of a listeria infection partly depend on where in the body that the infection happens. If it affects the gut, you might have: Loose stools, called diarrhea. Upset stomach. Vomiting. These symptoms often start within a day of eating tainted food. They tend to go away within a few days. […] The germs that cause a listeria infection also can spread through the blood and into the brain and spinal cord. If this happens, you might have: Fever and chills. Flu-like symptoms such as muscle aches and fatigue. Diarrhea or an upset stomach. Headache. Stiff neck. Confusion or changes in alertness. Loss of balance. Seizures. These symptoms often start within two weeks of eating tainted food. But it can take up to two months for symptoms to begin. […] During pregnancy, a listeria infection is likely to cause only mild symptoms in the pregnant person. But the effects on the baby can be devastating. The baby can die in the womb or have a life-threatening infection within a few days of birth. […] Symptoms of a listeria infection in a newborn can be subtle. But they can include: Little interest in feeding. Crankiness. High temperature, called fever, or low temperature, called hypothermia. Vomiting. Trouble breathing. Little to no energy. Low birth weight.
  • #2 Listeria Symptoms: Prevention & Natural Recovery – Dr. Axe
    https://draxe.com/health/listeria-symptoms/
    Symptoms of listeria infection in babies can be hard to identify since many babies who are infected have serious complications (like a blood or brain infection) by the time they get to the doctor. (13) In some cases, the infection is obvious right away (usually when the baby has a low birth weight and has other signs of illness around birth). In others (usually when the baby is born seemingly healthy), there can be a delay of several weeks before the infection is apparent. (14) Early signs of a listeria infection in a baby who was previously healthy can include: (15) Fever, Irritability, Lack of interest in feeding […] Do not ignore symptoms of listeria while pregnant, even if the symptoms are mild. Pregnant women and others who are at high risk for listeria infection should always be alert for the key listeria symptoms. The symptoms can be confused with other health problems or even overlooked in some cases. But listeriosis can lead to serious complications that can be deadly in people with risk factors. If you think you may have listeriosis during pregnancy, talk to a doctor right away. This will give you and your baby the best chance of avoiding the worst side effects.
  • #2
    https://www.who.int/news-room/fact-sheets/detail/listeriosis
    Pregnant women are about 20 times more likely to contract listeriosis than other healthy adults. It can result in miscarriage or stillbirth. Newborn may also have low birth weight, septicaemia and meningitis. People with HIV are at least 300 times more likely to get ill than those with a normally functioning immune system.
  • #2 Listeria: Signs, Symptoms, and Complications
    https://www.verywellhealth.com/listeria-symptoms-4570901
    Thus, older adults are left vulnerable to a wide range of infections, including foodborne illnesses like listeria. Not only are they more likely to get physically sick and present symptoms (adults over 65 are four times more likely to get listeria than the general population), but they are also more likely to have severe consequences as a result of the illness. […] Roughly three-quarters of people under 65 years old who arent pregnant who contract listeriosis have some kind of underlying medical condition that affects their immune system, such as kidney disease or chemotherapy treatments. […] These individuals are more likely to get seriously ill or die from a listeria infection.
  • #2
    https://consensus.app/questions/what-symptoms-listeriosis/
    Listeriosis, caused by the bacterium Listeria monocytogenes, presents a range of symptoms that can vary significantly depending on the affected population. The most frequently reported symptom across various studies is fever, which is observed in a majority of cases. Other common symptoms include muscle aches and gastrointestinal issues such as nausea and diarrhea. […] When the infection spreads to the nervous system, more severe symptoms can occur. These include headaches, stiff neck, confusion, loss of balance, and convulsions. In cases of neurolisteriosis, patients often exhibit altered consciousness and higher white blood cell counts, indicating a more severe infection. […] Pregnant women and their newborns are particularly vulnerable to listeriosis. Pregnant women often experience flu-like symptoms, including fever, headache, and myalgia, which can lead to more severe outcomes such as premature labor and stillbirth. Newborns infected with listeriosis may present with respiratory distress, fever, and sepsis, and are at high risk for meningitis.
  • #2 What are the Symptoms of Listeria and How is it Properly Diagnosed? What are the Survival Rates for Patients with Listeriosis? | Food Poisoning News
    https://www.foodpoisoningnews.com/what-are-the-symptoms-of-listeria-and-how-is-it-properly-diagnosed-what-are-the-survival-rates-for-patients-with-listeriosis/
    The symptoms of listeriosis can vary significantly based on the individuals health status, age, and the affected body part. Generally, symptoms appear within a few days to weeks after consuming contaminated food, with an incubation period ranging from 3 to 70 days. For most healthy adults, listeriosis may cause mild symptoms or may even be asymptomatic. When symptoms do occur, they often resemble a mild case of gastroenteritis and can include fever, muscle aches, nausea, vomiting, and, less commonly, diarrhea. These symptoms are usually self-limiting and may resolve without medical intervention. […] However, in high-risk populations, listeriosis can progress to a more severe and invasive form of the disease. In such cases, listeria can spread to the bloodstream, causing septicemia, or to the central nervous system, leading to meningitis or encephalitis. When the bloodstream is affected, patients often experience a sudden onset of high fever, chills, low blood pressure, and a rapid heart rate. The bodys systemic response to the infection can quickly escalate, necessitating immediate medical attention.
  • #2 Listeria: Signs, Symptoms, and Complications
    https://www.verywellhealth.com/listeria-symptoms-4570901
    These symptoms typically appear within a few days after eating contaminated food, though its not unheard of for symptoms to show up 30 days or more after becoming infected. These flu-like symptoms often last about one to three days. […] Listeria gastroenteritis has a mean incubation period of 24 hours and range between 6 hours and 10 days and invasive disease has a has a mean incubation period of 11 days with 90% presenting within 28 days. […] When the infection spreads beyond the gut a condition called invasive listeriosis it can lead to more serious symptoms that often require hospitalization. These can take a little longer to appear (one to four weeks). […] These symptoms are serious and are more common in vulnerable populations like older adults, newborns, pregnant people, and those with weakened immune systems. Listeriosis (invasive and non-invasive) in healthy individuals is rare.
  • #2 Listeriosis – NYC Health
    https://www.nyc.gov/site/doh/health/health-topics/listeriosis.page
    The most common symptoms of listeriosis can include fever, muscle aches, fatigue and diarrhea. In a more serious form of the infection, you may also experience intense headache, confusion, loss of balance and convulsions. […] Symptoms usually appear about three weeks after exposure, but can range from three to 70 days.
  • #2 Listeria Infection (Listeriosis) FAQs | Texas DSHS
    https://www.dshs.texas.gov/foodborne-illness/listeria-infection-listeriosis/listeria-infection-listeriosis-faqs
    Because the symptoms of listeriosis can take days or weeks to appear and the physical signs are not always obvious, it’s very important to follow food safety precautions consistently during pregnancy. […] Early diagnosis and treatment with high doses of antibiotics can prevent infection of the unborn baby and result in the birth of a healthy infant.
  • #2 Listeriosis: symptoms, treatment, prevention – Institut Pasteur
    https://www.pasteur.fr/en/medical-center/disease-sheets/listeriosis?language=fr
    In pregnant women, the infection is generally benign for the mother. It can even go unnoticed, or may manifest as contractions or fever. But in some cases it may cause miscarriage, preterm delivery or fetal death. Infection is severe in newborns, and often worse in preterm newborns, with symptoms that may include septicemia and infection of the lungs, nervous system and sometimes the skin. Infection in preterm newborns in particular can lead to severe sequelae.
  • #2
    https://www.who.int/news-room/fact-sheets/detail/listeriosis
    Listeriosis is a series of diseases caused by the bacteria L. monocytogenes, outbreaks of which occur in all countries. […] Noninvasive listeriosis (febrile listerial gastroenteritis) is a mild form of the disease affecting mainly otherwise healthy people. Symptoms include diarrhoea, fever, headache and myalgia (muscle pain). The incubation period is short (a few days). […] Invasive listeriosis is a more severe form of the disease and affects certain high risk groups of the population. These include pregnant women, patients undergoing treatment for cancer, HIV and organ transplants, elderly people and infants. This form of disease is characterized by severe symptoms and a high mortality rate (2030%). The symptoms include fever, myalgia (muscle pain), septicemia, meningitis. The incubation period is usually one to two weeks but can vary between a few days and up to 90 days.
  • #2 Listeria symptoms and risks while pregnant | HealthPartners Blog
    https://www.healthpartners.com/blog/listeria-symptoms-causes/
    Listeriosis can look and feel a lot like any other type of food poisoning, but its important to note it can be a lot more serious if left untreated. Symptoms may start within a few days or take as long as two to three months to fully develop. Listeria infection symptoms include: […] In rare cases, the infection can spread to the nervous system. When this happens, its called listeria meningitis. With this kind of listeria infection, symptoms may include: […] The length of time listeriosis symptoms last depends upon several factors. It is often the case that people can get better on their own without other interventions. For more at-risk groups, if its detected and treated early, antibiotics can resolve the infection within a week or two. If left untreated among high-risk populations, it can get much worse and, in rare cases, lead to serious health conditions such as miscarriages or stillbirths during pregnancy, or even death.
  • #2 Listeriosis – National Collaborating Centre for Infectious Diseases
    https://nccid.ca/debrief/listeriosis/
    Listeriosis symptoms can be particularly severe for certain groups, such as pregnant women, individuals with compromised immune systems, and newborns, as they may develop septicemia or meningitis. […] Symptoms of non-invasive listeriosis include diarrhea, fever, headache, and muscle pain, beginning within 24 hours of consuming contaminated food and usually lasting 1 to 3 days. […] Invasive listeriosis is more severe and occurs when the bacteria spread beyond the intestines, with symptoms including fever, muscle pain, septicemia, and meningitis. […] For pregnant individuals, the symptoms may be mild or absent, but the infection can lead to miscarriage, stillbirth, premature delivery, or newborn infections. […] Non-pregnant individuals often experience more severe symptoms like fever, stiff neck, confusion, and seizures, with a mortality rate of 20-30%.
  • #2 Listeriosis | HealthLink BC
    https://www.healthlinkbc.ca/healthlinkbc-files/listeriosis
    Listeriosis can start with symptoms, such as: […] Listeriosis can cause serious illness such as meningitis, blood infection and even death. Symptoms of meningitis include fever, headache, stiff neck, loss of balance, decreased level of consciousness and seizures. Symptoms of a blood infection include fever, nausea, vomiting and severe muscle aches. Listeriosis can also cause miscarriage or stillbirths in pregnant women. […] People who have symptoms of listeriosis should speak to their health care provider, especially if they are at increased risk of serious illness.
  • #2 Listeriosis – Infections – Merck Manual Consumer Version
    https://www.merckmanuals.com/home/infections/bacterial-infections-gram-positive-bacteria/listeriosis
    People have a fever, chills, and muscle aches plus nausea, vomiting, and diarrhea. […] People with listeriosis typically have chills, fever, and muscle aches (resembling the flu), with nausea, vomiting, and diarrhea. Usually, symptoms resolve in 1 to 7 days. […] If invasive listeriosis develops, symptoms vary depending on the area infected. […] If meningitis develops, people have a headache and a stiff neck. They may become confused and lose their balance. […] If the uterus or placenta is infected in a pregnant woman, a miscarriage or stillbirth may result. Two thirds of the surviving infants develop listeriosis, which may lead to a bloodstream infection (sepsis) or meningitis. Up to one half of newborns infected near or at the end of the pregnancy die.
  • #2 Listeriosis – Symptoms, diagnosis and treatment | BMJ Best Practice US
    https://bestpractice.bmj.com/topics/en-us/914
    Listeriosis is a gram-positive bacterial infection that primarily affects neonates, pregnant women, adults ages over 45-50 years, and immunocompromised people. […] Bacteremia, sepsis, meningitis, encephalitis, brain abscess, endocarditis, and gastroenteritis are the most common clinical manifestations. […] Key diagnostic factors include headache and altered mental status. […] Other diagnostic factors include fever, diarrhea and abdominal pain, generalized malaise, flu-like symptoms in pregnancy, poor feeding (neonates), meningismus, cranial nerve deficits, cerebellar signs, focal neurologic signs, seizures, hypotension, intrapartum fever, bleeding diathesis with hemorrhage, and cardiac murmur.
  • #2 Symptoms of Listeria Infection | Listeria Infection | CDC
    https://www.cdc.gov/listeria/signs-symptoms/index.html
    Symptoms in people who are not pregnant can be severe. In cases of invasive listeriosis not associated with pregnancy, almost 1 in 6 people die. […] Symptoms of intestinal illness usually start within 24 hours after eating food contaminated with Listeria and usually last 13 days. […] Symptoms typically include: Diarrhea, Vomiting. […] Symptoms are usually mild. However, some people with intestinal illness develop invasive illness. […] Contact a healthcare provider if both of the following things apply to you: You ate food that has been recalled or linked to an outbreak. You have a fever and other symptoms of listeriosis, such as fatigue and muscle aches.
  • #2 How Doctors Treat Listeria Infection
    https://www.everydayhealth.com/listeria/treatment/
    A listeria infection can be a life-threatening condition one that requires urgent medical attention. At the same time, many people who are infected by listeria may not require treatment at all. […] Healthy, nonpregnant individuals with normal immune function may not require any treatment or even feel sick enough to warrant a call to the doctor. While these people may experience mild symptoms after eating food contaminated with listeria bacteria such as a stomachache or diarrhea symptoms will typically subside by themselves within one to three days, though they can last for up to a week. […] If you and your doctor believe you’ve been exposed to listeria and you have symptoms stomach pain, diarrhea, nausea your immune system will likely get rid of the infection on its own. […] If you are experiencing symptoms and think you may have been exposed to listeria and you are pregnant, elderly, or immunocompromised, your doctor may pursue diagnostic testing to confirm a listeria infection usually a blood test or other fluid test.
  • #2 Listeriosis Information & Treatment
    https://www.columbiadoctors.org/health-library/condition/listeriosis/
    Listeriosis is food poisoning caused by eating foods contaminated with the Listeria monocytogenes (L. monocytogenes) bacterium. The symptoms of listeriosis include fever, muscle aches, and sometimes nausea or diarrhea. If infection spreads to the nervous system, symptoms such as headache, stiff neck, confusion, loss of balance, or convulsions can occur. […] An otherwise healthy person who is not pregnant typically does not need treatment. Symptoms will usually go away within a few weeks.
  • #2 Listeria: How to protect yourself from this common cause of food poisoning – Harvard Health
    https://www.health.harvard.edu/diseases-and-conditions/emlisteriaem-how-to-protect-yourself-from-this-common-cause-of-food-poisoning
    Some pregnant women who develop listeriosis have no symptoms or have mild symptoms. However, infection during pregnancy can lead to miscarriage, stillbirth, premature birth, or a serious infection in the newborn. […] Most people with intestinal symptoms of listeriosis, such as vomiting and diarrhea, recover within a couple of days with rest and fluids. Women who are pregnant will be prescribed an antibiotic to treat listeriosis. Antibiotics are also prescribed to people who are very ill or who are at risk of becoming very ill with an invasive Listeria infection.
  • #2 Listeriosis | Handouts | MedLink Neurology
    https://www.medlink.com/handouts/listeriosis
    Symptoms, in addition to fever and muscle aches, can include headache, stiff neck, confusion, loss of balance, and convulsions. […] In older adults and persons with immunocompromising conditions, septicemia and meningitis are the most common clinical presentations. Pregnant women may experience a mild, flu-like illness followed by fetal loss or bacteremia and meningitis in their newborns. Immunocompetent persons may experience acute febrile gastroenteritis or no symptoms. […] Listeriosis is treated with antibiotics. A person in a high-risk category who experiences flu-like symptoms within 2 months of eating contaminated food should seek medical care and tell the physician or health care provider about eating the contaminated food. […] Even with prompt treatment, some listeriosis cases result in death. This is particularly likely in older adults and in persons with other serious medical problems.
  • #3 Listeriosis Information | Mount Sinai – New York
    https://www.mountsinai.org/health-library/diseases-conditions/listeriosis
    Listeriosis is an infection that can occur when a person eats food that has been contaminated with bacteria called Listeria monocytogenes (L monocytogenes). […] In infants, symptoms of listeriosis may be seen in the first few days of life and may include: Loss of appetite, Lethargy, Jaundice, Respiratory distress (usually pneumonia), Shock, Skin rash, Vomiting. […] The bacteria most often cause a gastrointestinal illness. In some cases, you can develop a blood infection (septicemia) or inflammation of the covering of the brain (meningitis). Infants and children often have meningitis. […] Infection in early pregnancy may cause a miscarriage. The bacteria may cross the placenta and infect the developing baby. Infections in late pregnancy may lead to stillbirth or death of the infant within a few hours of birth. About one half of infants infected at or near birth will die. […] Listeriosis in a fetus or infant is often fatal. Healthy older children and adults are more likely to survive. The illness is less serious if it only affects the gastrointestinal system. Brain or spinal infections have worse outcomes.