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• #1 Norovirus infection – Symptoms & causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/norovirus/symptoms-causes/syc-20355296

  Norovirus infection can cause severe vomiting and diarrhea that start suddenly. […] Diarrhea, stomach pain and vomiting typically begin 12 to 48 hours after exposure. Norovirus infection symptoms usually last 1 to 3 days. […] Signs and symptoms of norovirus infection may start suddenly and include: Nausea, Vomiting, Stomach pain or cramps, Watery or loose diarrhea, Feeling ill, Low-grade fever, Muscle pain. […] Signs and symptoms usually begin 12 to 48 hours after your first exposure to a norovirus and last 1 to 3 days. […] Some people with norovirus infection may show no signs or symptoms. However, they’re still contagious and can spread the virus to others.

• #1 About Norovirus | Norovirus | CDC

  https://www.cdc.gov/norovirus/about/index.html

  Norovirus is a very contagious virus that causes vomiting and diarrhea. […] A person usually develops symptoms 12 to 48 hours after being exposed to norovirus. […] Most common symptoms: Diarrhea, vomiting, nausea, stomach pain […] Other symptoms: Fever, headache, and body aches. […] If you have norovirus illness, you can feel extremely ill, and vomit or have diarrhea many times a day. This can lead to dehydration (loss of body fluids), especially in young children, older adults, and people with other illnesses. Symptoms of dehydration include: Decreased urination, Dry mouth and throat, Feeling dizzy when standing up, Crying with few or no tears, Unusual sleepiness or fussiness. […] Most people with norovirus illness get better within 1 to 3 days.

• #1 Norovirus Infection in Older Adults Epidemiology, Risk Factors, and Opportunities for Prevention and Control

  https://pmc.ncbi.nlm.nih.gov/articles/PMC6546097/

  After an incubation period of 12 hours to 48 hours, the classic symptoms of norovirus disease include sudden onset of vomiting, abdominal cramps, and watery diarrhea. Constitutional symptoms, including low-grade fever, generalized myalgias, malaise, headache, and chills, frequently accompany the gastroenteritis. Vomiting and diarrhea are usually present together, but either can be seen alone. Most patients experience a brief, self-limited infection with symptoms resolving within 2 days to 3 days. The clinical spectrum of illness is varied, however, and up to one-third of those infected are asymptomatic. On the other end of the spectrum, the most vulnerable include those with underlying medical conditions, the very young, the elderly, and the immunocompromised, who are at greater risk for severe symptoms and complications, such as acute renal failure leading to hemodialysis, cardiac complications including arrhythmias, acute graft organ rejection in transplant recipients, and death.

• #1 Stomach Flu: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/12418-stomach-flu

  The most common stomach flu symptoms are nausea, vomiting and diarrhea. […] With stomach flu, gastrointestinal symptoms often come on suddenly. […] The most common stomach flu symptoms are: Diarrhea. Nausea and vomiting. Loss of appetite. Abdominal pain and cramping. […] These symptoms come from inflammation in your stomach and intestines. […] If your infection is more severe, or if your immune system reacts more strongly to it, you may have what are known as systemic symptoms. […] Systemic symptoms may include: Fever. Chills. Fatigue. Body aches. Headaches. Swollen lymph nodes. […] For many people, stomach flu symptoms seem to come on suddenly and out of nowhere. […] Symptoms occur one to two days after you were exposed to the virus. […] Stomach flu usually only lasts a few days, but it may last up to a week or two in severe cases.

• #1 Norovirus – Wikipedia

  https://en.wikipedia.org/wiki/Norovirus

  Norovirus infection is characterized by nausea, vomiting, watery diarrhea, abdominal pain, and in some cases, loss of taste. A person usually develops symptoms of gastroenteritis 12 to 48 hours after being exposed to norovirus. General lethargy, weakness, muscle aches, headaches, and low-grade fevers may occur. The disease is usually self-limiting, and severe illness is rare. Although having norovirus can be unpleasant, it is not usually dangerous, and most who contract it make a full recovery within two to three days. […] When a person becomes infected with norovirus, the virus replicates within the small intestine. The principal symptom is acute gastroenteritis, characterized by nausea, forceful vomiting, watery diarrhea, and abdominal pain, that develops 12 to 48 hours after exposure and lasts for 24–72 hours. Sometimes there is loss of taste, general lethargy, weakness, muscle aches, headache, cough, and/or low-grade fever. The disease is usually self-limiting.

• #1 Norovirus infection – including symptoms, treatment and prevention | SA HealthClose overlayDownload document

  https://www.sahealth.sa.gov.au/wps/wcm/connect/public+content/sa+health+internet/conditions/infectious+diseases/norovirus+infection/norovirus+infection+-+including+symptoms+treatment+and+prevention

  Norovirus infection causes gastroenteritis. Noroviruses are a very common cause of gastroenteritis outbreaks in South Australia. […] Illness often begins suddenly and symptoms usually last 1 or 2 days. However, during that brief period people can feel very ill and vomit, often violently and without warning, many times a day. […] Common symptoms include: nausea, vomiting, diarrhoea, abdominal cramps. […] Other symptoms may include: headache, low grade fever, chills, muscle aches, general sense of tiredness. […] Symptoms usually begin 24 to 48 hours after ingestion of the virus, but can appear as early as 12 hours after exposure. […] Norovirus can be found in the faeces and vomit of infected people from the day they start to feel ill and up to 2 weeks after they recover. […] Norovirus infection or viral gastroenteritis is very contagious – often begins suddenly with severe symptoms and usually lasts one or two days.

• #1 Norovirus know-how: Tips to manage symptoms and contain the spread | Prevention | Public Health | UT Southwestern Medical Center

  https://utswmed.org/medblog/norovirus-research-prevention/

  There is no effective treatment for norovirus, which is highly contagious. People typically recover after a couple of days. […] Infected people develop sudden, explosive vomiting and diarrhea that gets sprayed through the air when expelled by the body or when the toilet is flushed. […] Most people who get infected recover within 48 hours of symptom onset. But those who are immunocompromised, such as after an organ transplant, are at risk of developing chronic vomiting and diarrhea sometimes lasting several years since there isnt an effective antiviral treatment and/or vaccine to prevent norovirus infection. […] Norovirus symptoms come on quickly, causing your gut to rebel against nearly everything you eat or drink. While some may have a low-grade fever, the first sign is usually sudden onset vomiting, diarrhea, or both. Patients have said it feels like everything is coming out of both ends, with waves of nausea between episodes. Headaches and body aches become more pronounced as you lose fluids over 24-28 hours.

• #1 Norovirus Fact Sheet – MN Dept. of HealthMinnesota Department of HealthMinnesota Department of healthprintsearchsharefacebookinstagramlinkedintwitteryoutube

  https://www.health.state.mn.us/diseases/norovirus/noro.html

  Common symptoms of norovirus infection include vomiting, diarrhea, and stomach cramping. Less common symptoms can include low-grade fever or chills, headache, and muscle aches. Symptoms usually begin 1 or 2 days after ingesting the virus, but may appear as early as 12 hours after exposure. The illness typically comes on suddenly. The infected person may feel very sick and vomit often, sometimes without warning, many times a day. Sometimes people infected with norovirus have no symptoms at all, but can still pass the virus to others. […] Most people recover in 1 or 2 days and have no long-term health effects. Dehydration can be a concern in the very young, the elderly, or people with weakened immune systems. Occasionally infected people may experience milder symptoms for a week or more.

• #1 Norovirus: Symptoms, treatment, and preventionMedical News Today

  https://www.medicalnewstoday.com/articles/179107

  Norovirus, or the winter vomiting bug, can cause sickness, diarrhea, and gastroenteritis. It is highly contagious. […] The most common symptoms of norovirus include: nausea, vomiting, diarrhea, and stomach pain. […] It can also cause: fever, headache, and body aches. […] A person with norovirus can feel extremely ill, and experience vomiting and diarrhea many times throughout the day. This can result in a person becoming dehydrated. Symptoms of dehydration include: dizziness when standing up, dry mouth, dry throat, and decrease in urination. […] The CDC notes that signs and symptoms usually last 1–3 days and appear between 12 and 48 hours after the initial infection. In some cases, diarrhea may last longer than 3 days. […] In the vast majority of cases, a norovirus infection resolves itself within a few days and has no complications. […] Less commonly, the following complications may occur: malnutrition, constipation, dyspepsia, and reflux. […] Some people are unable to drink enough liquids to replace those that they lose through vomiting or diarrhea. They may become dehydrated and require special medical attention.

• #1 Norovirus | Mass.gov

  https://www.mass.gov/info-details/norovirus

  Norovirus is a very contagious virus that causes acute gastroenteritis with vomiting and diarrhea. Gastroenteritis is inflammation of the stomach and intestines. While it is sometimes called the “stomach flu” or “stomach bug,” norovirus is not related to the flu, which is caused by the influenza virus. […] Common symptoms of norovirus infection come on suddenly and include vomiting, diarrhea, nausea, and abdominal cramps. People with norovirus can also experience fever, headache, and muscle aches. Symptoms usually begin 12 to 48 hours after exposure to the virus and last about 1 to 3 days in most people, with no long-term effects. […] People with norovirus infection are most contagious when they have symptoms, especially vomiting, and during the first few days after feeling better. Studies have shown that you can still spread norovirus for two weeks or more after you feel better. Sometimes people infected with norovirus have no symptoms but can still pass the virus to others.

• #1 Norovirus (for Parents) | Nemours KidsHealth

  https://kidshealth.org/en/parents/norovirus.html

  Norovirus is a virus that causes diarrhea and vomiting. It’s sometimes called the stomach flu or stomach bug, but norovirus (NOR-uh-vy-ris) isn’t related to the flu. About a day or two after contact with norovirus, a person may have symptoms such as: nausea and vomiting, watery diarrhea, belly pain. Some people might also have a fever, chills, headache, or muscle aches. Sometimes norovirus causes no symptoms, but infected people can still pass the virus to others. A child with a norovirus infection who has a lot of diarrhea and vomiting can get dehydrated and feel lightheaded or dizzy. Kids with other health problems may have more severe symptoms. […] Symptoms of norovirus infection usually last about 2–3 days. […] In most cases symptoms get better in a few days.

• #1 Norovirus | Chester County, PA – Official WebsiteArrow LeftArrow RightSlideshow Left ArrowSlideshow Right Arrow

  https://www.chesco.org/854/Norovirus

  Noroviruses are a group of viruses that cause the „stomach flu,” or gastroenteritis in people. […] Symptoms usually begin about 24 to 48 hours after ingestion of the virus, but they can appear as early as 12 hours after exposure. […] Nausea […] Vomiting […] Diarrhea […] Stomach cramping […] Other symptoms include a low-grade fever, chills, headache, muscle aches, and a general sense of tiredness. The illness often begins suddenly, and the infected person may feel very sick. Symptoms usually last 1-2 days. Children often experience more vomiting than adults.

• #1 Norovirus Infection in Older Adults Epidemiology, Risk Factors, and Opportunities for Prevention and Control

  https://pmc.ncbi.nlm.nih.gov/articles/PMC6546097/

  Older adults form a high-risk group for severe symptoms and clinical outcomes. Norovirus outbreak investigations have reported a longer duration of diarrhea, from 3 days to 9 days, in older adults and even slower recovery from illness in patients greater than or equal to 85 years of age, with almost half of those affected still symptomatic after 4 days. Clinical symptoms other than diarrhea may also be prolonged in this age group; 1 study reported persistent headache, thirst, and vertigo as long as 19 days postonset of illness in 10 individuals 79 years old to 94 years old in an aged-care facility, although the diarrhea and vomiting had resolved by day 4 postonset. […] If they are hospitalized with norovirus infection, older adults are more frequently admitted to an ICU. Also, compared with younger hospitalized patients, older adults who are hospitalized for other conditions are more likely to acquire a nosocomial norovirus infection. This propensity for ICU care-acquired and hospital-acquired infections could be due to longer hospital stays and increased exposures, but it could also be secondary to increased susceptibility to the virus due to age-related changes in B-cell and T-cell function and immunosenescence or underlying chronic conditions and comorbidities.

• #1 What to Know About Norovirus | Tufts Now

  https://now.tufts.edu/2023/11/21/what-know-about-norovirus

  Even after the worst of the infection passes, you may still feel dehydrated or have persistent stomach issues from a lack of beneficial bacteria in your gut. Norovirus sort of decimates your microbiome, says St. Louis. It will take weeks to months to rebuild a healthy gut, so people may continue to have lingering symptoms like occasional diarrhea, cramping, nausea, and constipation until they’re able to get their microbiome back in order. […] Children under 12 months old or people with weakened immune systems are at a higher risk of more severe norovirus symptoms and may be more likely to develop chronic norovirus, when symptoms of norovirus last for weeks or even months.

• #1 Norovirus in Shellfish | Washington State Department of Health

  https://doh.wa.gov/community-and-environment/shellfish/recreational-shellfish/illnesses/norovirus

  Norovirus is a highly contagious virus that can cause viral gastroenteritis, often called „food poisoning” or the “stomach flu.” Eating raw or partially cooked shellfish can cause norovirus infection. […] The most common symptoms of norovirus are stomach pain, projectile vomiting, and severe diarrhea. Other symptoms may include fever, headache, and body aches. Some people can be infected with norovirus and have no symptoms. Good hygiene and hand washing, especially after using the bathroom and when handling food, are important to help limit the spread of norovirus. […] Symptoms usually appear 24-48 hours after being exposed to the virus. Sometimes symptoms appear as early as 12 hours after exposure. Most people recover in 1 to 3 days. […] Anyone can get norovirus. Young children, the elderly, and anyone who already has other illnesses may experience longer, more serious illness, and rarely, death.

• #1 What to Know About Norovirus | Tufts Now

  https://now.tufts.edu/2023/11/21/what-know-about-norovirus

  Norovirus symptoms appear very soon after infection, says St. Louis. People feel well one moment, and then the next moment, they feel extremely unwell, he says. You’ll know you probably have norovirus if your main symptoms are almost uncontrollable diarrhea and vomitingvirtually all infected people experience diarrhea, and about half have vomiting as well. […] Rarer norovirus symptoms may include a fever, chills, or muscle aches. In most healthy people, these symptoms leave almost as quickly as they arrived, and usually last for only about 12-36 hours. […] Dehydration is the most dangerous effect of norovirus, so replacing lost fluids is key. Symptoms of dehydration among people of all ages include dry mouth and lips, a decreased frequency of urination, fatigue, or dizziness. Cracked lips or skin that looks tight or pale are signs that dehydration may be severe.

• #1 How can I manage norovirus symptoms and speed up my recovery?

  https://www.icliniq.com/qa/norovirus-infection/what-are-the-symptoms-and-recovery-timeline-for-norovirus-infection

  I am a 31-year-old female who has been experiencing symptoms of norovirus for the past six days. These symptoms include severe diarrhea, nausea, abdominal cramping, and fatigue. […] It sounds like you are dealing with a particularly tough bout of norovirus infection (also known as the „stomach flu” or „winter vomiting disease”). The symptoms you are experiencing—severe diarrhea, nausea, abdominal cramping, fatigue, and mild dehydration—are all common with norovirus. […] Typically, norovirus infections last between one to three days, but symptoms like diarrhea and fatigue can persist for up to a week or longer in some cases. […] Given your borderline potassium level of 3.4 mmol/L and mild dehydration, it is especially important to ensure that you are not just replacing lost fluids but also replenishing electrolytes.

• #1 Norovirus – Wikipedia

  https://en.wikipedia.org/wiki/Norovirus

  Severe illness is rare; although people are frequently treated at the emergency ward, they are rarely admitted to the hospital. The number of deaths from norovirus in the United States is estimated to be around 570–800 each year, with most of these occurring in the very young, the elderly, and persons with weakened immune systems. Symptoms may become life-threatening in these groups if dehydration or electrolyte imbalance is ignored or left untreated.

• #1 Norovirus Infection in Older Adults Epidemiology, Risk Factors, and Opportunities for Prevention and Control

  https://pmc.ncbi.nlm.nih.gov/articles/PMC6546097/

  These age-related factors are also likely contributors to the high mortality rate in this age group from norovirus-associated illness. It is estimated that a vast majority (90%) of norovirus-associated deaths in the United States occur among persons greater than or equal to 65 years of age. In a study of norovirus outbreaks in nursing homes, all-cause mortality was higher in outbreak periods compared with nonoutbreak periods. When norovirus-associated deaths do occur, most infections are acquired in LTCFs and hospitals; a global review in developed countries found that immediate causes of death in these scenarios included sepsis, aspiration pneumonia, and cardiac complications.

• #1 What Are The Earliest Symptoms of Norovirus?

  https://www.afcurgentcare.com/denver-cherry-creek/blog/what-are-the-earliest-symptoms-of-norovirus/

  Norovirus, sometimes called the stomach bug, is a highly contagious virus that causes gastrointestinal illness. Symptoms of norovirus typically appear within 12 to 48 hours after exposure to the virus. The early onset is often sudden, and symptoms can escalate rapidly, leaving affected individuals weak and unwell. […] Here are some of the earliest symptoms reported at the onset of a norovirus infection: Nausea: A sense of queasiness or unease in the stomach is one of the first signs of norovirus. Nausea may develop suddenly and can range from mild discomfort to an overwhelming feeling that leads to vomiting. Vomiting: Norovirus often triggers intense and frequent vomiting, which is one of its hallmark symptoms. Vomiting can appear early in the illness and is a key way the virus spreads, as it can contaminate surfaces and surrounding areas. Diarrhea: Watery, non-bloody diarrhea is another early symptom of norovirus. Diarrhea often begins alongside or shortly after nausea and vomiting, contributing to dehydration if fluids are not replaced promptly. Stomach Cramps: Cramping or discomfort in the abdominal area is a common early symptom. These cramps are caused by the virus’s effect on the gastrointestinal tract and can range from mild to severe. Low-Grade Fever and Chills: In some cases, people may experience a slight fever, body aches, or chills in the early stages of a norovirus infection. While these symptoms are less common, they can accompany gastrointestinal distress.

• #1

  https://www.nbcnews.com/health/health-news/norovirus-spreading-symptoms-rcna69928

  The highly contagious virus’ symptoms typically include diarrhea, vomiting, nausea and stomach pain. […] Norovirus is sometimes referred to as the stomach flu, but it is not related to the influenza virus. Rather, it is a highly contagious virus that typically causes gastrointestinal symptoms like diarrhea, vomiting, nausea and stomach pain. Mild fever and aches are possible, too. […] There is no treatment for norovirus, but the CDC recommends drinking lots of fluids to prevent dehydration. The illness typically resolves within a few days. […] As with other viruses, immune protection develops after a norovirus infection but fades over time. […] Its not known exactly how long immunity lasts, Grusich said, and whether you are susceptible to norovirus infection is partly determined by your genes.

• #1 Norovirus infection

  https://www.ecdc.europa.eu/en/norovirus-infection

  Norovirus infections can spread rapidly among people, especially in community settings such as hospitals, schools, daycare centres, and nursing homes. These places often see outbreaks due to close contact among individuals. […] Noroviruses are part of the Caliciviridae family and are known for causing what is often called „winter-vomiting disease” or „stomach flu” which often spreads during the winter months. […] Immunity to noroviruses is relatively short-lived, lasting only a few months, and it is specific to the particular strain of the virus that an individual is exposed to. Given the genetic diversity of noroviruses, people can be infected multiple times throughout their lives. Some individuals however appears to be resistant to infection and disease from the most common form of norovirus, due to genetic factors.

• #1

  https://www.nbcnews.com/health/health-news/norovirus-spreading-symptoms-rcna69928

  „There are many different types of noroviruses,” she added. „Infection with one type of norovirus may not protect you against other types.” […] Studies have found people can get norovirus up to five times over their lives, Grusich said. […] Wilen estimated that people can get norovirus again within a year or two, though the symptoms are likely to be most severe the first time.

• #1 Understanding Norovirus: Symptoms and Treatment | Mount Nittany Health

  https://mountnittany.org/news-stories/health-and-wellness/understanding-norovirus-symptoms-prevention-and-treatment/

  Norovirus is the leading cause of vomiting, diarrhea, and foodborne illness in the United States, Dr. Jared Maurer of Mount Nittany Health explained. […] A person usually develops symptoms 12 to 48 hours after exposure to norovirus, Dr. Maurer explained. Most people with norovirus illness get better within 1 to 3 days, but they can still spread the virus for a few days after they feel better. […] According to Dr. Maurer, the most common symptoms include: Diarrhea, Vomiting, Nausea, Stomach pain. […] If you have norovirus illness, you can feel extremely ill and vomit or have diarrhea many times a day, Dr. Maurer noted. This can lead to dehydration (loss of body fluids), especially in young children, older adults, and people with other illnesses. […] Some people have more significant risks from norovirus. Children younger than 5 years old, older adults, and people with weakened immune systems are more likely to develop severe infection, Dr. Maurer explained. […] Contact a healthcare provider if you experience: Signs of severe dehydration, Bloody diarrhea, Severe abdominal pain, Symptoms lasting more than three days, Inability to keep liquids down for 24 hours.

• #1 Norovirus: What to Know | Student Health Center | RIT

  https://www.rit.edu/studenthealth/norovirus-what-know

  Symptoms may include nausea, vomiting, diarrhea, and stomach pain. […] Most people experience two or more of the following symptoms: nausea, vomiting, diarrhea, abdominal discomfort, headache, fever and muscle aches. Symptoms may last several hours to a couple of days with the average episode lasting about 24-48 hours. […] Prolonged bouts of vomiting and diarrhea can lead to dehydration and disruption in body chemistries. […] Gastroenteritis is easily passed on to others. […] Hand sanitizers are not affective against some viruses, including the Norovirus. […] Notify the Student Health Center for any of the following symptoms: You are not able to keep liquids down after 24 hours, You have been vomiting for more than 2 days, You have diarrhea for more than 3 days or without gradual improvement over 5 days, You have other symptoms that worry you.

• #1 Norovirus infection – Diagnosis & treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/norovirus/diagnosis-treatment/drc-20355302

  Norovirus infection is usually diagnosed based on your symptoms, but noroviruses can be identified from a stool sample. […] There’s no specific treatment for norovirus infection. Recovery generally depends on the health of your immune system. In most people, the illness usually resolves within a few days. […] If you’re not able to drink enough fluids to prevent dehydration, you might need to receive fluids through a vein (intravenous). […] Ease back into eating. Try to eat small amounts of food frequently if you experience nausea. […] Remember that norovirus infection is highly contagious. Avoid contact with others as much as possible during illness and for several days after recovery. […] How long have you or your child had symptoms? […] How frequent are the vomiting and diarrhea?

• #2 About Norovirus | Norovirus | CDC

  https://www.cdc.gov/norovirus/about/index.html

  Norovirus is a very contagious virus that causes vomiting and diarrhea. […] A person usually develops symptoms 12 to 48 hours after being exposed to norovirus. […] Most common symptoms: Diarrhea, vomiting, nausea, stomach pain […] Other symptoms: Fever, headache, and body aches. […] If you have norovirus illness, you can feel extremely ill, and vomit or have diarrhea many times a day. This can lead to dehydration (loss of body fluids), especially in young children, older adults, and people with other illnesses. Symptoms of dehydration include: Decreased urination, Dry mouth and throat, Feeling dizzy when standing up, Crying with few or no tears, Unusual sleepiness or fussiness. […] Most people with norovirus illness get better within 1 to 3 days.

• #2 Norovirus: Symptoms, treatment, and preventionMedical News Today

  https://www.medicalnewstoday.com/articles/179107

  Norovirus, or the winter vomiting bug, can cause sickness, diarrhea, and gastroenteritis. It is highly contagious. […] The most common symptoms of norovirus include: nausea, vomiting, diarrhea, and stomach pain. […] It can also cause: fever, headache, and body aches. […] A person with norovirus can feel extremely ill, and experience vomiting and diarrhea many times throughout the day. This can result in a person becoming dehydrated. Symptoms of dehydration include: dizziness when standing up, dry mouth, dry throat, and decrease in urination. […] The CDC notes that signs and symptoms usually last 1–3 days and appear between 12 and 48 hours after the initial infection. In some cases, diarrhea may last longer than 3 days. […] In the vast majority of cases, a norovirus infection resolves itself within a few days and has no complications. […] Less commonly, the following complications may occur: malnutrition, constipation, dyspepsia, and reflux. […] Some people are unable to drink enough liquids to replace those that they lose through vomiting or diarrhea. They may become dehydrated and require special medical attention.

• #2 Norovirus infection: symptoms and advice | NZ Government

  https://www.mpi.govt.nz/food-safety-home/food-poisoning-symptoms-causes/norovirus-infection-symptoms-advice/

  People get sick suddenly, usually within a day. […] Symptoms include: violent vomiting (often projectile), diarrhoea and stomach cramps, mild fever and chills, head and muscle aches, tiredness and nausea. […] There is a large risk of dehydration. Drinking fluids is important. The illness usually lasts a few days. It does not usually cause any complications.

• #2 Norovirus Fact Sheet – MN Dept. of HealthMinnesota Department of HealthMinnesota Department of healthprintsearchsharefacebookinstagramlinkedintwitteryoutube

  https://www.health.state.mn.us/diseases/norovirus/noro.html

  Common symptoms of norovirus infection include vomiting, diarrhea, and stomach cramping. Less common symptoms can include low-grade fever or chills, headache, and muscle aches. Symptoms usually begin 1 or 2 days after ingesting the virus, but may appear as early as 12 hours after exposure. The illness typically comes on suddenly. The infected person may feel very sick and vomit often, sometimes without warning, many times a day. Sometimes people infected with norovirus have no symptoms at all, but can still pass the virus to others. […] Most people recover in 1 or 2 days and have no long-term health effects. Dehydration can be a concern in the very young, the elderly, or people with weakened immune systems. Occasionally infected people may experience milder symptoms for a week or more.

• #2 Norovirus (Stomach Flu) Cases Are Surging: 3 Things to Know > News > Yale Medicine

  https://www.yalemedicine.org/news/norovirus-stomach-flu-cases-are-surging-3-things-to-know

  Norovirus, the most common cause of viral stomach flu, is on the rise in the United States. Norovirus infections cause acute gastroenteritis—a stomach bug with cramps, diarrhea, vomiting, and other symptoms. […] The symptoms most commonly include abdominal cramps, diarrhea, nausea, and vomiting, but it can also cause body aches, chills, fever, headaches, and tiredness. […] A person who has been sick with norovirus sheds billions of virus particles in their stool or vomit. And it only takes an exposure of as few as 10 particles for an individual to develop an infection. […] While people are most contagious when they are sick and a few days after their symptoms subside, they can still spread the virus for two weeks or more afterward. […] People develop symptoms within 12 to 48 hours of exposure to norovirus.

• #2 What to Know About Norovirus | Tufts Now

  https://now.tufts.edu/2023/11/21/what-know-about-norovirus

  Norovirus symptoms appear very soon after infection, says St. Louis. People feel well one moment, and then the next moment, they feel extremely unwell, he says. You’ll know you probably have norovirus if your main symptoms are almost uncontrollable diarrhea and vomitingvirtually all infected people experience diarrhea, and about half have vomiting as well. […] Rarer norovirus symptoms may include a fever, chills, or muscle aches. In most healthy people, these symptoms leave almost as quickly as they arrived, and usually last for only about 12-36 hours. […] Dehydration is the most dangerous effect of norovirus, so replacing lost fluids is key. Symptoms of dehydration among people of all ages include dry mouth and lips, a decreased frequency of urination, fatigue, or dizziness. Cracked lips or skin that looks tight or pale are signs that dehydration may be severe.

• #2 Norovirus: What to do if you catch it and helping to stop the spread – UK Health Security AgencyGOV.UK

  https://ukhsa.blog.gov.uk/2022/11/17/norovirus-what-to-do-if-you-catch-it-and-helping-to-stop-the-spread/

  Norovirus, commonly known as the winter vomiting bug (although it can strike at any time of year), is a stomach bug that causes sickness and diarrhoea. […] Symptoms include sudden onset of nausea, projectile vomiting and diarrhoea but can also include a high temperature, abdominal pain and aching limbs. […] The incubation period of norovirus is 12 to 48 hours, which is the time between catching the virus and developing symptoms. […] Vomiting and diarrhoea causes your body to lose water and salts, which can lead to dehydration, so it is important to drink plenty of fluids to prevent this. […] Norovirus immunity is short lived and there is no cross-strain immunity, therefore it is possible to have multiple norovirus infections in a short period of time if you’re exposed to different strains.

• #2 Your Guide to Norovirus (the „Stomach Bug”) – Stony Brook Medicine Health News

  https://health.stonybrookmedicine.edu/your-guide-to-norovirus-the-stomach-bug/

  Norovirus symptoms usually come on quickly, often within 12 to 48 hours after exposure. […] Common signs of norovirus include: Nausea, Vomiting, Diarrhea (often watery and frequent), Stomach cramps or pain, Low-grade fever or chills, Fatigue and body aches. […] Norovirus symptoms can range from mild to severe, but dehydration is one of the main concerns due to the rapid fluid loss caused by vomiting and diarrhea. Symptoms of dehydration include dry mouth, extreme thirst, dark urine and dizziness. […] For most people, norovirus symptoms last one to three days. In some cases, lingering fatigue or mild gastrointestinal discomfort can last a few more days as your body fully recovers. […] Recovery time may be longer for: Young children and infants, Elderly individuals, People with compromised immune systems.

• #2 Norovirus – Wikipedia

  https://en.wikipedia.org/wiki/Norovirus

  Norovirus infection is characterized by nausea, vomiting, watery diarrhea, abdominal pain, and in some cases, loss of taste. A person usually develops symptoms of gastroenteritis 12 to 48 hours after being exposed to norovirus. General lethargy, weakness, muscle aches, headaches, and low-grade fevers may occur. The disease is usually self-limiting, and severe illness is rare. Although having norovirus can be unpleasant, it is not usually dangerous, and most who contract it make a full recovery within two to three days. […] When a person becomes infected with norovirus, the virus replicates within the small intestine. The principal symptom is acute gastroenteritis, characterized by nausea, forceful vomiting, watery diarrhea, and abdominal pain, that develops 12 to 48 hours after exposure and lasts for 24–72 hours. Sometimes there is loss of taste, general lethargy, weakness, muscle aches, headache, cough, and/or low-grade fever. The disease is usually self-limiting.

• #2 Norovirus | Mass.gov

  https://www.mass.gov/info-details/norovirus

  Norovirus is a very contagious virus that causes acute gastroenteritis with vomiting and diarrhea. Gastroenteritis is inflammation of the stomach and intestines. While it is sometimes called the “stomach flu” or “stomach bug,” norovirus is not related to the flu, which is caused by the influenza virus. […] Common symptoms of norovirus infection come on suddenly and include vomiting, diarrhea, nausea, and abdominal cramps. People with norovirus can also experience fever, headache, and muscle aches. Symptoms usually begin 12 to 48 hours after exposure to the virus and last about 1 to 3 days in most people, with no long-term effects. […] People with norovirus infection are most contagious when they have symptoms, especially vomiting, and during the first few days after feeling better. Studies have shown that you can still spread norovirus for two weeks or more after you feel better. Sometimes people infected with norovirus have no symptoms but can still pass the virus to others.

• #2 How long will norovirus symptoms last? Virus could linger for days

  https://www.northjersey.com/story/news/2025/02/11/how-long-will-norovirus-symptoms-last-virus-could-linger-for-days-mayo-clinic/78384063007/

  We aren’t quite clear of peak norovirus season just yet, and if you come down with the debilitating virus, the symptoms could linger in your system for some time. […] The Mayo Clinic warns that norovirus symptoms can come on quickly after exposure, and linger for several days after infection. […] „Signs and symptoms usually begin 12 to 48 hours after your first exposure to a norovirus and last 1 to 3 days,” noted the Mayo Clinic. „You can continue to shed virus in your stool for several weeks after recovery. […] „This shedding can last weeks to months if you have another medical condition.” […] The Mayo Clinic notes that norovirus symptoms include: feeling ill, low-grade fever, muscle pain, nausea, vomiting, stomach pain or cramps, watery or loose diarrhea. […] „For most people, norovirus infection usually clears up within a few days and isn’t life-threatening,” read the Mayo Clinic’s norovirus website. „But in some people especially young children; older adults; and people with weakened immune systems or other medical conditions or who are pregnant norovirus infection can be severe.”

• #2 Norovirus Gastroenteritis – Digestive Disorders – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/digestive-disorders/gastroenteritis/norovirus-gastroenteritis

  Norovirus typically causes vomiting, abdominal cramps, and diarrhea. Children have more vomiting than diarrhea, whereas adults have more diarrhea. Symptoms start 1 to 2 days after infection and last 1 to 3 days. […] Vomiting and diarrhea can lead to mild to severe dehydration. […] People may also have fever, headache, and body aches.

• #2 Norovirus Infection – Warde Medical Laboratory

  https://wardelab.com/warde-reports/norovirus-infection/

  In November, 2007, 24 family members gathered in Alpena Michigan to celebrate Thanksgiving with a family potluck. Nineteen of 24 attendees experienced vomiting and diarrhea 16–24 hours after the meal. […] Symptoms lasted 24–48 hours and the 76 year old family matriarch was hospitalized and treated for dehydration. […] This case, taken from my personal family history, highlights many of the common features of norovirus infections — short incubation period, high attack rate, rapid onset of vomiting and diarrhea, typical duration of illness, and the high secondary attack rate among caregivers. […] Norovirus infection produces acute self-limiting gastroenteritis lasting 24–48 hours. Symptoms include nausea, vomiting, watery non-bloody diarrhea, abdominal pain, myalgia, headache, malaise, low grade fever or a combination of these symptoms. […] Diarrhea is more common than vomiting in children. […] Dehydration is the most common complication, especially among the young and elderly, and may require medical attention. […] Treatment is largely supportive with an emphasis on oral rehydration to replace fluids and electrolytes.

• #2 Norovirus Infection in Older Adults Epidemiology, Risk Factors, and Opportunities for Prevention and Control

  https://pmc.ncbi.nlm.nih.gov/articles/PMC6546097/

  These age-related factors are also likely contributors to the high mortality rate in this age group from norovirus-associated illness. It is estimated that a vast majority (90%) of norovirus-associated deaths in the United States occur among persons greater than or equal to 65 years of age. In a study of norovirus outbreaks in nursing homes, all-cause mortality was higher in outbreak periods compared with nonoutbreak periods. When norovirus-associated deaths do occur, most infections are acquired in LTCFs and hospitals; a global review in developed countries found that immediate causes of death in these scenarios included sepsis, aspiration pneumonia, and cardiac complications.

• #2 Norovirus know-how: Tips to manage symptoms and contain the spread | Prevention | Public Health | UT Southwestern Medical Center

  https://utswmed.org/medblog/norovirus-research-prevention/

  If you cant keep down water, the risk of dehydration and potentially fatal complications escalates. Seek medical care right away if you notice signs of dehydration. […] Though there is no effective treatment for norovirus, anti-nausea medication can help control symptoms. If you become dehydrated, you may need to get IV fluids in a medical setting and give your body a chance to rebuild its defenses. […] Norovirus can have serious long-term effects on people with weakened immune systems. This is because the gut microbiome helps shape the immune response, which is the process of finding and eliminating outside invaders such as viruses. […] Norovirus causes gastroenteritis, which is inflammation of the gut. Over time, that can lead to cell-level changes that cannot be detected without advanced testing and that make it tough for the gut microbiome to recover. This perpetuates chronic illness some transplant recipients have endured up to nine years of chronic vomiting or diarrhea, which can be fatal.

• #2 Norovirus – Wikipedia

  https://en.wikipedia.org/wiki/Norovirus

  Severe illness is rare; although people are frequently treated at the emergency ward, they are rarely admitted to the hospital. The number of deaths from norovirus in the United States is estimated to be around 570–800 each year, with most of these occurring in the very young, the elderly, and persons with weakened immune systems. Symptoms may become life-threatening in these groups if dehydration or electrolyte imbalance is ignored or left untreated.

• #2 Norovirus (Stomach Flu) Cases Are Surging: 3 Things to Know > News > Yale Medicine

  https://www.yalemedicine.org/news/norovirus-stomach-flu-cases-are-surging-3-things-to-know

  The biggest complication is dehydration, and anyone experiencing severe dehydration—with symptoms including light-headedness, confusion, and passing out—should seek medical care right away, since this complication may require hospitalization and treatment with intravenous fluids. […] It can take young children, older adults, and people who are infected when they were already sick with something else longer than usual to recover from norovirus. But most people get better within one to three days.

• #2 Norovirus cases are increasing. What are the symptoms? How does it spread?

  https://www.courier-journal.com/story/news/2025/01/01/norovirus-cases-what-are-the-symptoms-how-does-it-spread-cdc-health-illness-stomach-flu-virus-winter/77347576007/

  Norovirus is commonly known as the stomach flu, and is the leading cause of vomiting and diarrhea from inflammation of the stomach and intestines, or gastroenteritis, according to the CDC. […] The following are symptoms of norovirus infection, according to the Minnesota Department of Health and the Cleveland Clinic: Vomiting, Diarrhea, Stomach cramping, Urinating less or having dark-colored pee, Dry mouth, Feeling weak, Dizziness. […] A person who is sick and has been infected with the virus will typically experience the symptoms suddenly. […] People will begin to show symptoms between one to two days after they’ve been exposed to the virus, according to the Minnesota Department of Health. But, sometimes, symptoms may appear 12 hours later. […] The illness will usually last between one to two days.

• #2 Stomach Flu: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/12418-stomach-flu

  Yes, its very contagious. […] Youre most contagious during the acute phase of the infection (when you have symptoms) and for a few days after. […] The most likely complication is dehydration. […] Stay alert for signs of dehydration, such as: Thirst. Lack of urine (pee) or dark-colored urine. Lack of poop or hard, dry poop. Weakness or malaise. Sunken eyes. Crying without tears. Dehydration headache. Dry lips and tongue. […] For most people, symptoms get better in a few days. […] People with weaker immune systems may need treatment for dehydration or medications to reduce their symptoms.

• #2 Norovirus: A Highly Contagious Stomach Bug | Patient Care

  https://weillcornell.org/news/norovirus-a-highly-contagious-stomach-bug

  Norovirus infections in the New York Metropolitan Area appear to be high this year, Dr. Dubois says. […] The virus mainly causes vomiting and watery diarrhea, but in some patients, it may also cause nausea, fever, body aches and stomach pain. Norovirus infection comes on quicklyjust 1 to 2 days after exposureand its symptoms typically ease within 2 to 3 days. […] Symptoms of dehydration include: decrease in urination, dry mouth and throat, dizziness, especially on standing up from a sitting or lying position. […] Dr. Dubois says, Most children will recover from the illness, but we must be on guard to prevent its spread in homes, schools and communities, particularly to protect the most vulnerable among us.

• #2 Norovirus infection

  https://www.ecdc.europa.eu/en/norovirus-infection

  Norovirus is a highly contagious virus. Most people recover from norovirus illness within one or two days. The time between getting infected and showing symptoms typically falls between 12 to 48 hours. […] The symptoms of norovirus infection are: vomiting, diarrhoea, stomach pain. Some less common symptoms include: low-grade fever, chills, headache. […] While it is uncommon, dehydration due to prolonged diarrhoea may lead to death, particularly in the elderly or individuals with weakened immune systems. […] The symptoms of norovirus infection are: vomiting, diarrhoea, stomach pain. Some less common symptoms include: low-grade fever, chills, headache. […] While it is uncommon, dehydration due to prolonged diarrhoea may lead to death, particularly in the elderly or individuals with weakened immune systems.

• #2 Norovirus – NFID

  https://www.nfid.org/infectious-disease/norovirus/

  Norovirus is a common and highly contagious virus that causes inflammation in the stomach and intestines, a condition known as gastroenteritis. […] Anyone can be infected and get sick with norovirus. You can get norovirus illness more than once during your lifetime. The illness often begins suddenly. You may feel very sick, with stomach cramping, nausea, vomiting, or diarrhea, although symptoms usually only last a few days. People infected with norovirus are contagious from the moment they begin feeling ill to at least 3 days after recovery. Some people may be contagious for as long as 2 weeks after recovery.

• #2 Norovirus Infection – Epidemiology

  https://www.vdh.virginia.gov/epidemiology/epidemiology-fact-sheets/norovirus-infection/

  Norovirus infection is caused by a very contagious virus called norovirus. The infection is characterized by sudden onset of nausea, vomiting, diarrhea, and stomach cramping. […] Symptoms usually include nausea, vomiting, diarrhea, and abdominal pain. Sometimes people have a low-grade fever, chills, headache, muscle aches, and a general sense of tiredness. Dehydration is the most common complication of illness. […] Symptoms of norovirus infection usually begin 12–48 hours after exposure. The illness is usually brief, with symptoms lasting 1–3 days. […] People sick with norovirus can shed the virus in their feces (stool), even if they do not have symptoms. People are most contagious while they are ill and during the first few days after they recover. Most people can remain contagious for two weeks or more after they recover.

• #2

  https://www.nbcnews.com/health/health-news/norovirus-spreading-symptoms-rcna69928

  The highly contagious virus’ symptoms typically include diarrhea, vomiting, nausea and stomach pain. […] Norovirus is sometimes referred to as the stomach flu, but it is not related to the influenza virus. Rather, it is a highly contagious virus that typically causes gastrointestinal symptoms like diarrhea, vomiting, nausea and stomach pain. Mild fever and aches are possible, too. […] There is no treatment for norovirus, but the CDC recommends drinking lots of fluids to prevent dehydration. The illness typically resolves within a few days. […] As with other viruses, immune protection develops after a norovirus infection but fades over time. […] Its not known exactly how long immunity lasts, Grusich said, and whether you are susceptible to norovirus infection is partly determined by your genes.

• #2

  https://www.kanehealth.com/Pages/Norovirus.aspx

  Noroviruses are a group of related viruses that affect the intestinal tract causing gastroenteritis illness. […] Many of the noroviruses cause similar symptoms that usually occur between 24 hours and 48 hours after exposure. They include nausea, vomiting, diarrhea, abdominal pain, body aches, headache, tiredness and low-grade fever. Symptoms typically last 24 hours to 60 hours and subside on their own. There are no known long-term effects after recovery from this infection. […] Yes. It appears that immunity following norovirus infection varies from person to person. It is possible some persons achieve immunity but more studies are needed to better understand susceptibility to reinfection.

• #2 Norovirus | Mass.gov

  https://www.mass.gov/info-details/norovirus

  There is no specific treatment for norovirus infection. Norovirus cannot be treated with antibiotics and people usually get better without medical attention in 1 to 3 days. It is important for people infected with norovirus to drink plenty of liquids to replace fluids they have lost and prevent dehydration.

• #2 What to know about Norovirus | Ohio State Health & Discovery

  https://health.osu.edu/health/virus-and-infection/what-to-know-norovirus

  Norovirus is a type of viral infection that causes gastroenteritis — an inflammation of the lining of the intestines that leads to nausea, vomiting and diarrhea. It’s extremely contagious, and outbreaks are common. […] The most common symptoms of norovirus are nausea, vomiting, diarrhea and abdominal pain. Sometimes people may have fevers as well. Typically, symptoms last 24 to 72 hours. […] People are most contagious while they’re sick and up to two days after symptoms subside. […] If you (or a child) are sick with norovirus, you should stay home from work or school while you’re sick and for two days after symptoms resolve. In most instances, symptoms improve on their own in a few days and it’s not necessary to see a doctor. Because it’s a virus, antibiotics aren’t effective against norovirus, and there’s no specific treatment. It must run its course. It’s recommended to contact your health care provider if symptoms last beyond a few days, if there are signs of dehydration (inability to keep down liquids, low urine output, lethargy) or for severe symptoms (such as bloody diarrhea or severe abdominal pain).

• #2 Norovirus: What to Know | Student Health Center | RIT

  https://www.rit.edu/studenthealth/norovirus-what-know

  Seek emergency care if: You have abdominal pain (other than mild cramping), You are vomiting blood, You notice blood in your bowel movements, You experience signs of dehydration such as excessive thirst, dry mouth, dark, very little or no urine, severe weakness, dizziness or lightheadedness, You have a temperature of 101 or higher, You are unable to take medications that you usually take.

• #2 Norovirus is on the rise. How is it different? | News

  https://news.llu.edu/health-wellness/norovirus-rise-how-it-different

  Norovirus is a viral infection that causes inflammation of the stomach and intestines, leading to symptoms such as: Nausea, Vomiting, Diarrhea, Stomach pain, Fever and body aches. […] Symptoms typically develop 12 to 48 hours after exposure and can last for one to three days. While most people recover without complications, dehydration can be a concern, especially for young children, older adults, and individuals with weakened immune systems. […] While most cases of norovirus resolve without medical intervention, individuals should seek care if they experience: Severe dehydration (dry mouth, dizziness, decreased urination), Persistent vomiting or diarrhea lasting more than a few days, Fever over 103F that does not respond to medication.

• #2 Noroviruses

  https://dph.illinois.gov/topics-services/diseases-and-conditions/diseases-a-z-list/diseases/noroviruses.html

  Many of the noroviruses cause similar symptoms that usually occur between 24 hours and 48 hours after exposure. They include nausea, vomiting, diarrhea, abdominal pain, body aches, headache, tiredness and low-grade fever. Symptoms typically last 24 hours to 60 hours and subside on their own. […] There are no known long-term effects after recovery from this infection. […] Yes. It appears that immunity following norovirus infection varies from person to person. It is possible some persons achieve immunity but more studies are needed to better understand susceptibility to reinfection.

• #3 Norovirus – Wikipedia

  https://en.wikipedia.org/wiki/Norovirus

  Norovirus infection is characterized by nausea, vomiting, watery diarrhea, abdominal pain, and in some cases, loss of taste. A person usually develops symptoms of gastroenteritis 12 to 48 hours after being exposed to norovirus. General lethargy, weakness, muscle aches, headaches, and low-grade fevers may occur. The disease is usually self-limiting, and severe illness is rare. Although having norovirus can be unpleasant, it is not usually dangerous, and most who contract it make a full recovery within two to three days. […] When a person becomes infected with norovirus, the virus replicates within the small intestine. The principal symptom is acute gastroenteritis, characterized by nausea, forceful vomiting, watery diarrhea, and abdominal pain, that develops 12 to 48 hours after exposure and lasts for 24–72 hours. Sometimes there is loss of taste, general lethargy, weakness, muscle aches, headache, cough, and/or low-grade fever. The disease is usually self-limiting.

• #3 Norovirus Fact Sheet – MN Dept. of HealthMinnesota Department of HealthMinnesota Department of healthprintsearchsharefacebookinstagramlinkedintwitteryoutube

  https://www.health.state.mn.us/diseases/norovirus/noro.html

  Common symptoms of norovirus infection include vomiting, diarrhea, and stomach cramping. Less common symptoms can include low-grade fever or chills, headache, and muscle aches. Symptoms usually begin 1 or 2 days after ingesting the virus, but may appear as early as 12 hours after exposure. The illness typically comes on suddenly. The infected person may feel very sick and vomit often, sometimes without warning, many times a day. Sometimes people infected with norovirus have no symptoms at all, but can still pass the virus to others. […] Most people recover in 1 or 2 days and have no long-term health effects. Dehydration can be a concern in the very young, the elderly, or people with weakened immune systems. Occasionally infected people may experience milder symptoms for a week or more.

• #3 Norovirus in Shellfish | Washington State Department of Health

  https://doh.wa.gov/community-and-environment/shellfish/recreational-shellfish/illnesses/norovirus

  Norovirus is a highly contagious virus that can cause viral gastroenteritis, often called „food poisoning” or the “stomach flu.” Eating raw or partially cooked shellfish can cause norovirus infection. […] The most common symptoms of norovirus are stomach pain, projectile vomiting, and severe diarrhea. Other symptoms may include fever, headache, and body aches. Some people can be infected with norovirus and have no symptoms. Good hygiene and hand washing, especially after using the bathroom and when handling food, are important to help limit the spread of norovirus. […] Symptoms usually appear 24-48 hours after being exposed to the virus. Sometimes symptoms appear as early as 12 hours after exposure. Most people recover in 1 to 3 days. […] Anyone can get norovirus. Young children, the elderly, and anyone who already has other illnesses may experience longer, more serious illness, and rarely, death.

• #3 Norovirus | Mass.gov

  https://www.mass.gov/info-details/norovirus

  Norovirus is a very contagious virus that causes acute gastroenteritis with vomiting and diarrhea. Gastroenteritis is inflammation of the stomach and intestines. While it is sometimes called the “stomach flu” or “stomach bug,” norovirus is not related to the flu, which is caused by the influenza virus. […] Common symptoms of norovirus infection come on suddenly and include vomiting, diarrhea, nausea, and abdominal cramps. People with norovirus can also experience fever, headache, and muscle aches. Symptoms usually begin 12 to 48 hours after exposure to the virus and last about 1 to 3 days in most people, with no long-term effects. […] People with norovirus infection are most contagious when they have symptoms, especially vomiting, and during the first few days after feeling better. Studies have shown that you can still spread norovirus for two weeks or more after you feel better. Sometimes people infected with norovirus have no symptoms but can still pass the virus to others.

• #3 Norovirus infection – including symptoms, treatment and prevention | SA HealthClose overlayDownload document

  https://www.sahealth.sa.gov.au/wps/wcm/connect/public+content/sa+health+internet/conditions/infectious+diseases/norovirus+infection/norovirus+infection+-+including+symptoms+treatment+and+prevention

  Norovirus infection causes gastroenteritis. Noroviruses are a very common cause of gastroenteritis outbreaks in South Australia. […] Illness often begins suddenly and symptoms usually last 1 or 2 days. However, during that brief period people can feel very ill and vomit, often violently and without warning, many times a day. […] Common symptoms include: nausea, vomiting, diarrhoea, abdominal cramps. […] Other symptoms may include: headache, low grade fever, chills, muscle aches, general sense of tiredness. […] Symptoms usually begin 24 to 48 hours after ingestion of the virus, but can appear as early as 12 hours after exposure. […] Norovirus can be found in the faeces and vomit of infected people from the day they start to feel ill and up to 2 weeks after they recover. […] Norovirus infection or viral gastroenteritis is very contagious – often begins suddenly with severe symptoms and usually lasts one or two days.

• #3 Stomach Flu: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/12418-stomach-flu

  The most common stomach flu symptoms are nausea, vomiting and diarrhea. […] With stomach flu, gastrointestinal symptoms often come on suddenly. […] The most common stomach flu symptoms are: Diarrhea. Nausea and vomiting. Loss of appetite. Abdominal pain and cramping. […] These symptoms come from inflammation in your stomach and intestines. […] If your infection is more severe, or if your immune system reacts more strongly to it, you may have what are known as systemic symptoms. […] Systemic symptoms may include: Fever. Chills. Fatigue. Body aches. Headaches. Swollen lymph nodes. […] For many people, stomach flu symptoms seem to come on suddenly and out of nowhere. […] Symptoms occur one to two days after you were exposed to the virus. […] Stomach flu usually only lasts a few days, but it may last up to a week or two in severe cases.

• #3 Centre for Health Protection – Norovirus Infection

  https://www.chp.gov.hk/en/healthtopics/content/24/33.html

  Symptoms include nausea, vomiting, diarrhoea, abdominal pain, low-grade fever and malaise. The symptoms are usually self-limiting and most people will get better within 1 – 3 days. […] The incubation period is usually 12 – 48 hours. […] Given adequate fluids to prevent dehydration and supportive treatment, the patient usually recovers within 1 – 3 days.

• #3 Norovirus Infection in Older Adults Epidemiology, Risk Factors, and Opportunities for Prevention and Control

  https://pmc.ncbi.nlm.nih.gov/articles/PMC6546097/

  These age-related factors are also likely contributors to the high mortality rate in this age group from norovirus-associated illness. It is estimated that a vast majority (90%) of norovirus-associated deaths in the United States occur among persons greater than or equal to 65 years of age. In a study of norovirus outbreaks in nursing homes, all-cause mortality was higher in outbreak periods compared with nonoutbreak periods. When norovirus-associated deaths do occur, most infections are acquired in LTCFs and hospitals; a global review in developed countries found that immediate causes of death in these scenarios included sepsis, aspiration pneumonia, and cardiac complications.

• #3 Your Guide to Norovirus (the „Stomach Bug”) – Stony Brook Medicine Health News

  https://health.stonybrookmedicine.edu/your-guide-to-norovirus-the-stomach-bug/

  Most cases of stomach flu resolve on their own without the need for medical treatment. […] However, you should see a doctor if you experience: Persistent vomiting lasting more than 24 hours, Inability to keep fluids down, Signs of severe dehydration (dizziness, confusion, low urine output or rapid heartbeat), Blood in your stool or vomit, A high fever (above 102F for adults and 100.4F in children) that lasts more than two days.

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