Materiały źródłowe

• #1 A Classic Presentation of Roseola Infantum

  https://pmc.ncbi.nlm.nih.gov/articles/PMC10874238/

  Roseola infantum, also known as exanthema subitum and sixth disease, is a ubiquitous childhood viral syndrome characterized by high fever followed sequentially by a distinctive defervescence rash. The condition is present globally and affects nearly all children before the age of three years. The diagnosis is made clinically by identifying the illness’ predictable progression, which is routinely self-limited, requiring symptomatic treatment only. […] The causative organism is the B variant of human herpesvirus (HHV)-6 and, less frequently, HHV-7, which both belong to the genus Roseolovirus and are members of the Betaherpesviridae subfamily of herpesviruses. The viruses have a worldwide prevalence, with most children acquiring infection by two years of age and nearly 100 percent of the global population being seropositive by three years. Ten to 45 percent of febrile illnesses in United States infants have been attributed to HHV-6.

• #1 Roseola Infantum: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1133023-overview

  Serologic tests have indicated that HHV-6 infection is nearly universal. […] In emergency clinics, HHV-6 has been reported to be responsible for 10-45% of cases of febrile illness in infants. […] A 2005 population-based study revealed primary HHV-6 infection cumulative percentages of 40% by age 12 months and 77% by age 24 months. […] The peak age range for the acquisition of primary HHV-6 infection is 9-21 months. […] International studies show some variation in worldwide seroprevalence. […] A strong association of HHV-6A with febrile illness in Zambian children has been noted, suggesting an endemic hot spot. […] Antibody titers are high in newborns because of maternal antibody. […] Transplacental infection occurs in about 1% of cases. […] Titers decrease from 3 months of age to 9 months and then begin to rise because of primary infections.

• #1 Roseola Infantum – UtahDERM Diagnoses

  https://utahderm.med.utah.edu/diagnoses/roseola-infantum/

  Roseola is most commonly seen in children. By the age of 12 months, 50-60% of children will test positively for HHV-6 infection, with numbers over 90% by the age of 3. […] Most HHV-6 infections are subclinical with only 20% of infected children following the classic clinical course. Reactivation may occur, typically in immunosuppressed hosts.

• #1 Roseola (Human Herpesviruses 6 and 7) – Clinical Tree

  https://clinicalpub.com/roseola-human-herpesviruses-and/

  Primary infection with HHV-6B is acquired rapidly by essentially all children following the loss of maternal antibodies in the 1st few mo of infancy, 95% of children being infected with HHV-6 by 2yr of age. […] The peak age of primary HHV-6B infection is 6-9mo of life, with infections occurring sporadically and without seasonal predilection or contact with other ill individuals. […] Infection with HHV-7 is also widespread but occurs later in childhood and at a slower rate; only 50% of children have evidence of prior infection with HHV-7 by 3yr of age. […] Seroprevalence reaches 75% at 3-6yr of age. […] Preliminary data suggest that the majority of children acquire primary infection with HHV-6 from the saliva or respiratory droplets of asymptomatic adults or older children. […] However, congenital infection with HHV-6 occurs in 1% of newborns.

• #1 Roseola infantum (exanthem subitum) – UpToDate

  https://www.uptodate.com/contents/roseola-infantum-exanthem-subitum/print

  Roseola is an illness of young children, with a peak prevalence between 7 and 13 months. Ninety percent of cases occur in children younger than two years. Roseola occurs equally in males and females. […] It occurs throughout the year, but the peak incidence is in the spring and fall seasons.

• #1 Roseola – Wikiwand

  https://www.wikiwand.com/en/articles/Roseola

  Between the two human herpesvirus 6 types, HHV-6B has been detected much more frequently in hosts. HHV-6B has been shown to affect about 90% of children before the age of 3. Out of these, 20% develop symptoms of roseola, also known as exanthem subitum. […] Roseola affects girls and boys equally worldwide year-round. Roseola typically affects children between six months and two years of age, with peak prevalence in children between 7 and 13 months old. This correlates with the decrease in maternal antibodies, thus virus protection, that occurs at the age of 6 months. Out of all emergency department visits for children between ages 6 months and 12 months who have a fever, twenty percent of these are due to HHV-6. […] Many children exposed and infected can present without symptoms, which makes determining the incidence within the population difficult.

• #1 Roseola Infantum (Exanthem Subitum) | Obgyn Key

  https://obgynkey.com/roseola-infantum-exanthem-subitum/

  Roseola predominantly is an illness of young children. […] It occurs rarely in infants younger than 3 months or children older than 4 years. In a review of 1462 cases, the peak age range prevalence was 7 to 13 months of age; 55% of the cases occurred within the first year of life, and 90% occurred within the first 2 years of life. […] Occasionally cases have been seen in older children, adolescents, and young adults and in neonates and other infants younger than 6 months. […] Although Faber and Dickey found twice as many girls as boys with the syndrome, the sex ratio in most large studies has been equal. […] Although three epidemics have been reported, and cases frequently occur in groups by season, most cases occur sporadically without known exposure. The syndrome, when seen sporadically, generally is considered to be noncontagious, but secondary cases have been reported occasionally. The incubation period range in epidemics is 5 to 15 days.

• #1 Roseola Infantum | Treatment & Management | Point of Care

  https://www.statpearls.com/point-of-care/28644

  Human herpesvirus 6 has been found to be the cause of febrile illness in 10% to 45% of infants in the United States. […] A 2005 population-based study indicated that 40% of HHV-6 infection is seen by age twelve months and 77% is seen by age 24 months. […] This study also reported that the virus is seen in both males and females, but was more common in females and children with older siblings. […] The peak incidence of the virus is in the spring and fall seasons. […] Transmission occurs primarily through saliva via respiratory droplets.

• #1 Roseola Infantum: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1133023-overview

  Titers for HHV-6B remain high until after age 60 years. […] Infection with HHV-6A appears later in life. […] In roseola infantum, age ranges from 2 weeks to 3 years. […] In one study, almost one fourth of the patients were younger than 6 months. […] In a Brazilian study, 75% of HHV-6 infections occurred in children between the ages of 6 and 17 months. […] In a population-based study, HHV-6 acquisition was reported to be associated with female sex and with having older siblings. […] With rare geographic exceptions, race-related differences in HHV-6 infection have not been noted.

• #1 Roseola Infantum

  https://mobile.fpnotebook.com/ID/Virus/RslInfntm.htm

  Peak ages: 6-18 months […] Peak seasonal distribution in late summer and early fall […] Transmission is typically from asymptomatic shedding from older siblings and adults […] Very common […] Prevalence of Antibody to HHV-6 approaches 100% by 3 years of age.

• #1 Roseola – Symptoms & causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/roseola/symptoms-causes/syc-20377283

  Roseola is a common infection that usually affects children by age 2. It’s caused by a virus that spreads from person to person. […] Roseola is caused by a virus, usually human herpes virus 6 or sometimes human herpes virus 7. It is spread by contact with an infected person’s saliva, such as when sharing a cup, or through the air, such as when a person with roseola coughs or sneezes. It can take about 9 to 10 days for symptoms to develop after exposure to an infected person. […] Unlike chickenpox and other childhood viral illnesses that spread rapidly, roseola rarely results in a communitywide outbreak. The infection most often occurs in the spring and fall.

• #1 Roseola [+ Free Cheat Sheet] | Lecturio Nursing

  https://www.lecturio.com/nursing/free-cheat-sheet/roseola/

  Roseola, primarily caused by human herpesvirus 6 (HHV-6), predominantly affects infants and young children, presenting as a sudden, high fever followed by a characteristic pinkish-red rash. […] In clinical practice, nurses should be especially aware of its contagious nature and take care to differentiate roseola from other rash-causing illnesses, such as measles or rubella. […] Roseola is transmitted via respiratory droplets that enter the child’s nose or mouth when an infected person coughs, sneezes, talks, or laughs. […] The client is only contagious while fever is present. […] Yes, roseola is contagious to adults, if they haven’t been exposed to it before. […] The client is only contagious while fever is present. […] While many adults are immune, pregnant women that have not been exposed previously may contract roseola. […] Good hand hygiene and avoiding close contact with infected individuals are the primary preventive measures.

• #1 Roseola (Sixth Disease) Symptoms & Causes

  https://my.clevelandclinic.org/health/diseases/15785-roseola-infantumsixth-disease

  Roseola is a common, contagious viral infection that affects most babies and children before they turn 2. […] Roseola is contagious and spreads through saliva or respiratory droplets, often from people who dont yet have any symptoms. Your child is no longer contagious once their fever has been gone for 24 hours. […] In the U.S., roseola causes up to 45% of all fevers in infants. Of all infants who need care for a fever at an emergency room (ER), about 12% have roseola. […] Roseola is a viral infection, meaning your child is exposed to a virus that makes them sick. The human herpesvirus 6 causes most cases of roseola. The human herpesvirus 7 causes a few cases. […] Yes, roseola is contagious. It spreads through the saliva and respiratory droplets (from a cough or sneeze) of someone who has a fever or doesnt yet have symptoms. It takes anywhere from five to 15 days for symptoms to start after exposure to a virus that causes roseola.

• #1 Roseola (Human Herpesviruses 6 and 7) – Clinical Tree

  https://clinicalpub.com/roseola-human-herpesviruses-and/

  Two mechanisms of vertical transmission of HHV-6 have been identified, transplacental infection and chromosomal integration. […] Chromosomal integration of HHV-7 has only been suggested in a single case report thus far. […] Chromosomal integration has been identified as the major mechanism by which HHV-6 is vertically transmitted, accounting for 86% of congenital infections, with one third resulting from HHV-6A, a percentage much higher than in primary infection in the United States. […] Primary infection with HHV-7 is presumed to be spread by the saliva of asymptomatic individuals. […] DNA of both HHV-6 and HHV-7 has been identified in the cervical secretions of pregnant women, suggesting an additional role for sexual or perinatal transmission of these viruses.

• #1 Roseola (Human Herpes Viruses 6 and 7) | Obgyn Key

  https://obgynkey.com/roseola-human-herpes-viruses-6-and-7/

  Chromosomal integration has been identified as the major mechanism by which HHV-6 is vertically transmitted, accounting for 86% of congenital infections, with one third due to HHV-6 variant A. […] DNA of both HHV-6 and HHV-7 has been identified in the cervical secretions of pregnant women, suggesting an additional role for sexual or perinatal transmission of these viruses.

• #1 Roseola (Human Herpes Viruses 6 and 7) | Clinical Gate

  https://clinicalgate.com/roseola-human-herpes-viruses-6-and-7/

  Primary infection with HHV-6 accounts for a significant burden of illness on the health care system; one study found that 24% of visits to emergency departments by infants between 6 and 9 mo of age were due to primary HHV-6 infection. […] A population-based study of primary HHV-6 infection has confirmed that 93% of infants had symptoms and were more likely to visit a physician than non-infected infants. […] Primary infection with HHV-7 has been identified in a small number of children with roseola in whom the illness is indistinguishable from that due to HHV-6. […] A prospective study of children 2-35 mo of age with suspected encephalitis or severe illness with convulsions and fever found that 17% had primary infection with either HHV-6 or HHV-7. […] Reactivation of HHV-6 has been reported in several different populations with and without disease with the use of various methods of detection. […] Primary infections with HHV-6 and HHV-7 are widespread throughout the human population with no current means of interrupting transmission.

• #1 A Classic Presentation of Roseola Infantum

  https://pmc.ncbi.nlm.nih.gov/articles/PMC10874238/

  The diagnosis of roseola is clinically directed, and laboratory and radiographic evaluations are generally not indicated. The disease course is self-limited, and treatment is supportive with rest, hydration, and antipyretics. The prognosis is favorable, with minimal risk of complications or adverse outcomes. […] Febrile seizures are the most frequent complications of roseola and have been reported in 10 to 15 percent of cases. A significant number of childhood febrile convulsions have been attributed to the viral syndrome, and it is the most likely precipitator of febrile seizures in children under two years of age. While a history of febrile seizures due to roseola will increase a child’s risk of future seizures, the nature of the convulsions is benign. […] Roseola is a globally prevalent viral syndrome recognized for its high fever and subsequent defervescence exanthem. Most children will be affected before three years of age, and physicians should consider the condition among their differentials in febrile toddlers. The diagnosis is made clinically, and the course is mainly self-limited, requiring only reassurance and supportive care. Physicians should be aware of the association between roseola and febrile seizures and be ready to educate family members on the benign nature of this frequent complication. While rare, latent virus reactivation in immunocompromised patients may result in significant sequelae, primarily manifesting in neurologic conditions.

• #1 Roseola | Texas Children’s

  https://www.texaschildrens.org/content/conditions/roseola

  Roseola is a contagious viral illness that results in a high fever and a rash that develops as the fever resolves. The disease is also called roseola infantum or sixth disease. It most commonly affects children between 3 months and 4 years of age. […] A child is probably most contagious during the period of high fever, before the rash occurs. […] Roseola is usually diagnosed based on a medical history and physical exam of your child. The rash of roseola that follows a high fever is unique to roseola.

• #1 Predicting Factors of Roseola Infantum Infected with Human Herpesvirus 6 from Urinary Tract Infection

  http://chikd.org/journal/view.php?id=10.3339/jkspn.2016.20.2.69

  The aim of this study was to compare the clinical and laboratory features of infants with roseola infantum due to human herpesvirus 6 (HHV6) infection and those with urinary tract infection (UTI). […] The disease initially manifests as a sudden-onset high fever, typically lasting 3-5 days. […] Differential diagnosis of roseola infantum with urinary tract infection (UTI) is difficult because the initial symptom of fever without other symptom is also suggestive of UTI which is common disease in children. […] The aim of this study is to compare the clinical and laboratory features of children with roseola infantum caused by human herpesvirus 6 (HHV6) and UTI for early differential diagnosis. […] In our study, high proportion of patients with roseola infantum (98.0%) and all patients with UTI were treated with antibiotics.

• #1 Predicting Factors of Roseola Infantum Infected with Human Herpesvirus 6 from Urinary Tract Infection

  https://www.chikd.org/journal/view.php?number=640&viewtype=pubreader

  The aim of this study was to compare the clinical and laboratory features of infants with roseola infantum due to human herpesvirus 6 (HHV6) infection and those with urinary tract infection (UTI). […] The relative risk of HHV6 infection compared with that of UTI increased with fever duration (4.31.7 days vs 2.81.7 days; P0.001) and decreased with platelet (PLT) count (37394103/mm3 vs 22990103/mm3 P0.001). […] Pyuria, age, fever duration, WBC count, CRP level, and PLT count were the differentiating factors of HHV6 infection from UTI. […] In our study, high proportion of patients with roseola infantum (98.0%) and all patients with UTI were treated with antibiotics. […] Age, fever duration, WBC, CRP and PLT and urinalysis may be useful for making a tentative diagnosis when infants present with high fever and are suspected of having HHV6 or UTI. […] In that cases in which diagnostic uncertainty exists, urine culture is thought to be the best means of ruling out UTI.

• #1 Roseola (Sixth Disease) Symptoms & Causes

  https://my.clevelandclinic.org/health/diseases/15785-roseola-infantumsixth-disease

  Most children have no complications. However, among those that do, the most common issue is a febrile seizure. Febrile seizures affect 10% to 15% of children 6 to 18 months old who have roseola, typically on the first day of their fever. […] Children rarely have more serious complications from roseola. However, they can occur, especially for children who have weakened immune systems due to cancer, autoimmune disease or other conditions. Possible complications include: Infection and inflammation in their lungs (pneumonia). Inflammation of the delicate layer of tissue surrounding their brain and spinal cord (aseptic meningitis). Inflammation of their brain (encephalitis). Other conditions affecting their brain or spinal cord, which make up their central nervous system. […] Roseola is unavoidable for most kids. Theres no vaccine for it, and most children get it before starting school. However, you can help your child stay healthy by helping them develop good hand-washing habits. Hand-washing is one of the best ways to prevent viral infections. Your pediatrician can offer additional suggestions.

• #1 Roseola infantum

  https://www.rch.org.au/kidsinfo/fact_sheets/roseola_infantum/

  Roseola is contagious, meaning it can be spread from one person to another. […] Roseola is contagious before the symptoms appear, so it is difficult to prevent its spread to others. […] There is no known way to prevent the spread of roseola and there is no vaccine. Thorough hand hygiene is the best way to help reduce the spread of the virus. […] Roseola is a very common, mild infection, usually affecting children between the ages of six months and two years. […] Roseola is contagious, but only before the symptoms appear.

• #2 Roseola Infantum | Treatment & Management | Point of Care

  https://www.statpearls.com/point-of-care/28644

  Human herpesvirus 6 has been found to be the cause of febrile illness in 10% to 45% of infants in the United States. […] A 2005 population-based study indicated that 40% of HHV-6 infection is seen by age twelve months and 77% is seen by age 24 months. […] This study also reported that the virus is seen in both males and females, but was more common in females and children with older siblings. […] The peak incidence of the virus is in the spring and fall seasons. […] Transmission occurs primarily through saliva via respiratory droplets.

• #2 Roseola – Wikiwand

  https://www.wikiwand.com/en/articles/Roseola

  Between the two human herpesvirus 6 types, HHV-6B has been detected much more frequently in hosts. HHV-6B has been shown to affect about 90% of children before the age of 3. Out of these, 20% develop symptoms of roseola, also known as exanthem subitum. […] Roseola affects girls and boys equally worldwide year-round. Roseola typically affects children between six months and two years of age, with peak prevalence in children between 7 and 13 months old. This correlates with the decrease in maternal antibodies, thus virus protection, that occurs at the age of 6 months. Out of all emergency department visits for children between ages 6 months and 12 months who have a fever, twenty percent of these are due to HHV-6. […] Many children exposed and infected can present without symptoms, which makes determining the incidence within the population difficult.

• #2 Roseola | 5-Minute Pediatric Consult

  https://peds.unboundmedicine.com/pedscentral/view/5-Minute-Pediatric-Consult/617717/all/Roseola?q=Measles

  Roseola affects children from 3 months to 4 years of age. The peak age is 7 to 13 months. […] 90% of cases occur in the first 2 years of life. […] No gender predilection. […] Roseola can occur throughout the year; outbreaks have occurred in all seasons.

• #2 Viral Exanthems | Anesthesia Key

  https://aneskey.com/viral-exanthems/

  Roseola is a typical viral rash with high-spiking fevers caused by human herpesvirus 6 and 7 (HHV-6, HHV-7), members of the human cytomegalovirus family. The virus is transmitted through respiratory secretions from asymptomatic individuals and during the febrile viremic phase of the illness. Maternally transferred antibodies provide protection for the first 3 to 6 months of life. Therefore, it is typically seen in infants and toddlers between 6 months and 2 years of age. By the age of 4 years, virtually all children have serologic evidence of prior infection from HHV-6. […] The classic presentation includes sudden onset of high fever to 40C with fever spikes persisting for 72 hours followed by a transient erythematous maculopapular truncal rash that may progress to the extremities. From the time of exposure, the incubation period is approximately 9 to 10 days. The rash may occur up to 24 hours before or after the fever resolves and may be transient and escape detection. Infants with fever rarely appear ill and act remarkably well for the height of their fever. Large postoccipital lymph nodes are characteristic, and their presence in an infant with high fever can predict roseola as the cause of fever. A bulging fontanelle has been found in up to 25% of infants infected with HHV-6. If the infant is alert, playful, and without paradoxical irritability, meningitis is very unlikely.

• #2 Roseola Infantum (Exanthem Subitum) | Obgyn Key

  https://obgynkey.com/roseola-infantum-exanthem-subitum/

  Roseola predominantly is an illness of young children. […] It occurs rarely in infants younger than 3 months or children older than 4 years. In a review of 1462 cases, the peak age range prevalence was 7 to 13 months of age; 55% of the cases occurred within the first year of life, and 90% occurred within the first 2 years of life. […] Occasionally cases have been seen in older children, adolescents, and young adults and in neonates and other infants younger than 6 months. […] Although Faber and Dickey found twice as many girls as boys with the syndrome, the sex ratio in most large studies has been equal. […] Although three epidemics have been reported, and cases frequently occur in groups by season, most cases occur sporadically without known exposure. The syndrome, when seen sporadically, generally is considered to be noncontagious, but secondary cases have been reported occasionally. The incubation period range in epidemics is 5 to 15 days.

• #2 Roseola Infantum: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1133023-overview

  Serologic tests have indicated that HHV-6 infection is nearly universal. […] In emergency clinics, HHV-6 has been reported to be responsible for 10-45% of cases of febrile illness in infants. […] A 2005 population-based study revealed primary HHV-6 infection cumulative percentages of 40% by age 12 months and 77% by age 24 months. […] The peak age range for the acquisition of primary HHV-6 infection is 9-21 months. […] International studies show some variation in worldwide seroprevalence. […] A strong association of HHV-6A with febrile illness in Zambian children has been noted, suggesting an endemic hot spot. […] Antibody titers are high in newborns because of maternal antibody. […] Transplacental infection occurs in about 1% of cases. […] Titers decrease from 3 months of age to 9 months and then begin to rise because of primary infections.

• #2 Roseola (Sixth Disease) Symptoms & Causes

  https://my.clevelandclinic.org/health/diseases/15785-roseola-infantumsixth-disease

  Roseola is a common, contagious viral infection that affects most babies and children before they turn 2. […] Roseola is contagious and spreads through saliva or respiratory droplets, often from people who dont yet have any symptoms. Your child is no longer contagious once their fever has been gone for 24 hours. […] In the U.S., roseola causes up to 45% of all fevers in infants. Of all infants who need care for a fever at an emergency room (ER), about 12% have roseola. […] Roseola is a viral infection, meaning your child is exposed to a virus that makes them sick. The human herpesvirus 6 causes most cases of roseola. The human herpesvirus 7 causes a few cases. […] Yes, roseola is contagious. It spreads through the saliva and respiratory droplets (from a cough or sneeze) of someone who has a fever or doesnt yet have symptoms. It takes anywhere from five to 15 days for symptoms to start after exposure to a virus that causes roseola.

• #2 Roseola Infantum: An Updated Review – Leung – Current Pediatric Reviews

  https://journals.eco-vector.com/1573-3963/article/view/645462

  Roseola infantum is a common viral disease that occurs during childhood worldwide. […] The disease occurs most frequently in children between 6 months and 2 years of age. […] Transmission of the infection most likely results from the asymptomatic shedding of the virus in the saliva of the caregivers or other close contacts. […] In general, serious complications are rare and occur more often in individuals who are immunocompromised. […] Failure to recognize this condition may result in undue parental fear, unnecessary investigations, delay in treatment for conditions that mimic roseola infantum and complications from roseola infantum, unnecessary treatment of roseola infantum per se, and misuse of healthcare expenditure.

• #2 Roseola infantum Made Ridiculously Easy!!! | PPT

  https://www.slideshare.net/slideshow/roseola-infantum-made-ridiculously-easy/179713332

  Roseola infantum is the most common exanthematic fever in children under the age of 2 years. Incidence: 24% of acute febrile illness presenting at a paediatric emergency department. Age Peak incidence is between 6 and 9 months. […] Roseola is spread as air borne or droplet infection. The child is probably infectious during the whole period of the disease and may be even before the high temperature begins. […] Rash fades after 1-2 days leaving no scaling or pigmentation. Reactivation of the latent virus may occur, especially in immune suppression.

• #2 Exanthem Subitum – RCEMLearning

  https://www.rcemlearning.co.uk/modules/common-childhood-exanthems/lessons/selected-causes/topic/exanthem-subitum/

  Exanthem subitum (otherwise known as sixth disease or roseola infantum) is caused by human herpesvirus 6 (HHV-6) and human herpesvirus 7 (HHV-7). HHV-6 is particularly widespread and nearly all children will acquire the infection early in childhood. […] The incubation period for exanthem subitum is from 5-15 days. […] Prenatal and perinatal infections are uncommon due to the presence of maternal antibodies.

• #2 Roseola (Human Herpes Viruses 6 and 7) | Obgyn Key

  https://obgynkey.com/roseola-human-herpes-viruses-6-and-7/

  Primary infection with HHV-6 is acquired rapidly by essentially all children following the loss of maternal antibodies in the first few months of infancy, 95% of children being infected with HHV-6 by 2 yr of age. […] The peak age of primary HHV-6 infection is 6-9 mo of life, with infections occurring sporadically and without seasonal predilection. […] Infection with HHV-7 is also widespread but occurs later in childhood and at a slower rate; only 50% of children have evidence of prior infection with HHV-7 by 3 yr of age. […] Seroprevalence reaches 75% at 3-6 yr of age. […] Although it is presumed that children acquire primary infection with HHV-6 and HHV-7 from the saliva of asymptomatic adults, congenital infection with HHV-6 occurs in 1% of newborns. […] Two mechanisms of vertical transmission of HHV-6 have been identified, transplacental infection and chromosomal integration (CI-HHV6).

• #2 Roseola (Human Herpes Viruses 6 and 7) | Clinical Gate

  https://clinicalgate.com/roseola-human-herpes-viruses-6-and-7/

  Primary infection with HHV-6 is acquired rapidly by essentially all children following the loss of maternal antibodies in the first few months of infancy, 95% of children being infected with HHV-6 by 2 yr of age. […] Infection with HHV-7 is also widespread but occurs later in childhood and at a slower rate; only 50% of children have evidence of prior infection with HHV-7 by 3 yr of age. […] Two mechanisms of vertical transmission of HHV-6 have been identified, transplacental infection and chromosomal integration (CI-HHV6). […] Chromosomal integration has been identified as the major mechanism by which HHV-6 is vertically transmitted, accounting for 86% of congenital infections, with one third due to HHV-6 variant A. […] DNA of both HHV-6 and HHV-7 has been identified in the cervical secretions of pregnant women, suggesting an additional role for sexual or perinatal transmission of these viruses.

• #2 Roseola (Human Herpes Viruses 6 and 7) | Obgyn Key

  https://obgynkey.com/roseola-human-herpes-viruses-6-and-7/

  Chromosomal integration has been identified as the major mechanism by which HHV-6 is vertically transmitted, accounting for 86% of congenital infections, with one third due to HHV-6 variant A. […] DNA of both HHV-6 and HHV-7 has been identified in the cervical secretions of pregnant women, suggesting an additional role for sexual or perinatal transmission of these viruses.

• #2 Roseola (viral rash): Causes, Symptoms, and Treatment — DermNet

  https://dermnetnz.org/topics/roseola

  Roseola is most commonly seen in children between 6 months and three years of age. Most children (86%) will have had roseola by the age of 1 year. […] Roseola is spread from person to person via the saliva of asymptomatic family members. The incubation period for roseola is approximately 9-10 days after exposure. […] Because roseola is usually mild and self-limiting, diagnosis is usually solely based on the characteristic history and physical examination. […] Complications are rare with roseola in most children. The most common complication is febrile seizures/convulsions that may occur in 5-15% of children.

• #2 Predicting Factors of Roseola Infantum Infected with Human Herpesvirus 6 from Urinary Tract Infection

  http://chikd.org/journal/view.php?id=10.3339/jkspn.2016.20.2.69

  Early differential diagnosis of roseola infantum and UTI is should help to reduce the use of antibiotics in viral infection. […] This is the first paper which compared clinical characteristics of HHV6 which was confirmed by viral testing for HHV-6 versus UTI and suggest PLT as a predictable factor.

• #2 A Classic Presentation of Roseola Infantum

  https://pmc.ncbi.nlm.nih.gov/articles/PMC10874238/

  The diagnosis of roseola is clinically directed, and laboratory and radiographic evaluations are generally not indicated. The disease course is self-limited, and treatment is supportive with rest, hydration, and antipyretics. The prognosis is favorable, with minimal risk of complications or adverse outcomes. […] Febrile seizures are the most frequent complications of roseola and have been reported in 10 to 15 percent of cases. A significant number of childhood febrile convulsions have been attributed to the viral syndrome, and it is the most likely precipitator of febrile seizures in children under two years of age. While a history of febrile seizures due to roseola will increase a child’s risk of future seizures, the nature of the convulsions is benign. […] Roseola is a globally prevalent viral syndrome recognized for its high fever and subsequent defervescence exanthem. Most children will be affected before three years of age, and physicians should consider the condition among their differentials in febrile toddlers. The diagnosis is made clinically, and the course is mainly self-limited, requiring only reassurance and supportive care. Physicians should be aware of the association between roseola and febrile seizures and be ready to educate family members on the benign nature of this frequent complication. While rare, latent virus reactivation in immunocompromised patients may result in significant sequelae, primarily manifesting in neurologic conditions.

• #2 Viral Exanthems | Anesthesia Key

  https://aneskey.com/viral-exanthems/

  Febrile convulsions have been seen in up to 20% to 30% of infants with roseola due to the height of fever and sudden rise in body temperature. Fatigue, irritability, and anorexia are reported occasionally. Pneumonia, aseptic meningitis, encephalitis, hepatitis, and hemophagocytic syndrome are rare, but have been reported in immunocompromised individuals. There have also been some reports of primary infection or reactivation of HHV-6 infection being associated with development of temporal lobe epilepsy. […] Management is supportive, and fever may be treated for comfort. In severely immunosuppressed patients, IV ganciclovir may be considered. Although there is no prospective comparative data, the recommended dose is 10 to 20 mg/kg/d divided every 12 hours, given intravenously. The optimal length of treatment has not been reported.

• #2

  https://step2.medbullets.com/pediatrics/120584/roseola-infantum

  Epidemiology […] Demographics […] infants children adults […] Location […] skin […] Risk factors […] immunosuppression […] transplant recipients […] […] […] no vaccines are available

• #2 Roseola [+ Free Cheat Sheet] | Lecturio Nursing

  https://www.lecturio.com/nursing/free-cheat-sheet/roseola/

  Roseola, primarily caused by human herpesvirus 6 (HHV-6), predominantly affects infants and young children, presenting as a sudden, high fever followed by a characteristic pinkish-red rash. […] In clinical practice, nurses should be especially aware of its contagious nature and take care to differentiate roseola from other rash-causing illnesses, such as measles or rubella. […] Roseola is transmitted via respiratory droplets that enter the child’s nose or mouth when an infected person coughs, sneezes, talks, or laughs. […] The client is only contagious while fever is present. […] Yes, roseola is contagious to adults, if they haven’t been exposed to it before. […] The client is only contagious while fever is present. […] While many adults are immune, pregnant women that have not been exposed previously may contract roseola. […] Good hand hygiene and avoiding close contact with infected individuals are the primary preventive measures.

• #3 Roseola (Sixth Disease) Symptoms & Causes

  https://my.clevelandclinic.org/health/diseases/15785-roseola-infantumsixth-disease

  Roseola is a common, contagious viral infection that affects most babies and children before they turn 2. […] Roseola is contagious and spreads through saliva or respiratory droplets, often from people who dont yet have any symptoms. Your child is no longer contagious once their fever has been gone for 24 hours. […] In the U.S., roseola causes up to 45% of all fevers in infants. Of all infants who need care for a fever at an emergency room (ER), about 12% have roseola. […] Roseola is a viral infection, meaning your child is exposed to a virus that makes them sick. The human herpesvirus 6 causes most cases of roseola. The human herpesvirus 7 causes a few cases. […] Yes, roseola is contagious. It spreads through the saliva and respiratory droplets (from a cough or sneeze) of someone who has a fever or doesnt yet have symptoms. It takes anywhere from five to 15 days for symptoms to start after exposure to a virus that causes roseola.

• #3 Roseola – Wikiwand

  https://www.wikiwand.com/en/articles/Roseola

  Between the two human herpesvirus 6 types, HHV-6B has been detected much more frequently in hosts. HHV-6B has been shown to affect about 90% of children before the age of 3. Out of these, 20% develop symptoms of roseola, also known as exanthem subitum. […] Roseola affects girls and boys equally worldwide year-round. Roseola typically affects children between six months and two years of age, with peak prevalence in children between 7 and 13 months old. This correlates with the decrease in maternal antibodies, thus virus protection, that occurs at the age of 6 months. Out of all emergency department visits for children between ages 6 months and 12 months who have a fever, twenty percent of these are due to HHV-6. […] Many children exposed and infected can present without symptoms, which makes determining the incidence within the population difficult.

• #3 Roseola epidemiology and demographics – wikidoc

  https://www.wikidoc.org/index.php/Roseola_epidemiology_and_demographics

  There is no accurate data for the prevalence or incidence of roseola. This is because the disease is a self limiting disease and it is under reported in most cases. Roseola is an illness of young children, with a peak prevalence between 7 and 13 months. Ninety percent of cases occur in children younger than two years. Roseola occurs equally in boys and girls. It occurs throughout the year, although outbreaks may occur in groups according to season. […] There is no accurate data for the prevalence or incidence of roseola. […] Roseola commonly affects young children between the ages of 7 and 13 months. […] Males and females are affected equally by roseola. […] There is no racial predilection for roseola. […] HHV6 infection is nearly universal accounting for 10-45% of febrile illness in infants. […] There is a strong association of HHV 6A in Zambian children when compared to rest of the world.

• #3 Roseola | Texas Children’s

  https://www.texaschildrens.org/content/conditions/roseola

  Roseola is a contagious viral illness that results in a high fever and a rash that develops as the fever resolves. The disease is also called roseola infantum or sixth disease. It most commonly affects children between 3 months and 4 years of age. […] A child is probably most contagious during the period of high fever, before the rash occurs. […] Roseola is usually diagnosed based on a medical history and physical exam of your child. The rash of roseola that follows a high fever is unique to roseola.

• #3 Roseola infantum | PPT

  https://www.slideshare.net/slideshow/roseola-infantum/5054824

  Roseola can develop in children year-round. A higher incidence during spring and fall months. […] Children with roseola rarely report contact with other affected children. Outbreaks are uncommon. The incubation period averages 10 days (range of 5-15 days). […] Sex, race, and geography do not play an important role in acquisition of roseola.

• #3 Roseola (viral rash): Causes, Symptoms, and Treatment — DermNet

  https://dermnetnz.org/topics/roseola

  Roseola is most commonly seen in children between 6 months and three years of age. Most children (86%) will have had roseola by the age of 1 year. […] Roseola is spread from person to person via the saliva of asymptomatic family members. The incubation period for roseola is approximately 9-10 days after exposure. […] Because roseola is usually mild and self-limiting, diagnosis is usually solely based on the characteristic history and physical examination. […] Complications are rare with roseola in most children. The most common complication is febrile seizures/convulsions that may occur in 5-15% of children.

• #4 Roseola Infantum: Practice Essentials, Background, Pathophysiology

  https://emedicine.medscape.com/article/1133023-overview

  Serologic tests have indicated that HHV-6 infection is nearly universal. […] In emergency clinics, HHV-6 has been reported to be responsible for 10-45% of cases of febrile illness in infants. […] A 2005 population-based study revealed primary HHV-6 infection cumulative percentages of 40% by age 12 months and 77% by age 24 months. […] The peak age range for the acquisition of primary HHV-6 infection is 9-21 months. […] International studies show some variation in worldwide seroprevalence. […] A strong association of HHV-6A with febrile illness in Zambian children has been noted, suggesting an endemic hot spot. […] Antibody titers are high in newborns because of maternal antibody. […] Transplacental infection occurs in about 1% of cases. […] Titers decrease from 3 months of age to 9 months and then begin to rise because of primary infections.

• #5 A Classic Presentation of Roseola Infantum

  https://pmc.ncbi.nlm.nih.gov/articles/PMC10874238/

  Roseola infantum, also known as exanthema subitum and sixth disease, is a ubiquitous childhood viral syndrome characterized by high fever followed sequentially by a distinctive defervescence rash. The condition is present globally and affects nearly all children before the age of three years. The diagnosis is made clinically by identifying the illness’ predictable progression, which is routinely self-limited, requiring symptomatic treatment only. […] The causative organism is the B variant of human herpesvirus (HHV)-6 and, less frequently, HHV-7, which both belong to the genus Roseolovirus and are members of the Betaherpesviridae subfamily of herpesviruses. The viruses have a worldwide prevalence, with most children acquiring infection by two years of age and nearly 100 percent of the global population being seropositive by three years. Ten to 45 percent of febrile illnesses in United States infants have been attributed to HHV-6.

• #6 Roseola Infantum

  https://mobile.fpnotebook.com/ID/Virus/RslInfntm.htm

  Peak ages: 6-18 months […] Peak seasonal distribution in late summer and early fall […] Transmission is typically from asymptomatic shedding from older siblings and adults […] Very common […] Prevalence of Antibody to HHV-6 approaches 100% by 3 years of age.

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