Pediatric viral gastroenteritis
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Epidemiology and Prevalence of Pediatric Viral Gastroenteritis
Pediatric viral gastroenteritis is a leading cause of diarrhea and dehydration in children worldwide, with the highest burden seen in those under five years old Brandt1983Wenjia2021Abdel-Rahman2021+2 MORE. The most common viral agents include rotavirus, norovirus, adenovirus, astrovirus, and sapovirus Wenjia2021Corcoran2014Abdel-Rahman2021+3 MORE. Historically, rotavirus was the predominant cause, but recent studies show norovirus is now more frequently detected in many regions, likely due to the success of rotavirus vaccination programs Wenjia2021Jin2016Sharma2024. In some areas, caliciviruses (mainly norovirus) have surpassed rotavirus as the leading cause of viral gastroenteritis in children Wenjia2021Jin2016.
Age and Seasonal Patterns in Pediatric Viral Gastroenteritis
Children between 6 and 24 months are most commonly affected by viral gastroenteritis, with the highest rates of infection and hospitalization in this age group Brandt1983Jin2016. Rotavirus infections tend to peak in the winter and early spring, while norovirus outbreaks are more common in late fall and winter Brandt1983Jin2016Mojahed2022+1 MORE. Adenovirus can be detected year-round, and other viruses like astrovirus and sapovirus also show seasonal trends Brandt1983Jin2016Mojahed2022.
Clinical Manifestations and Diagnosis
Symptoms of pediatric viral gastroenteritis include diarrhea, vomiting, dehydration, and sometimes fever Monson1986Leung2021Abdel-Rahman2021+1 MORE. The severity of illness can vary depending on the specific virus and whether there are co-infections with other pathogens . Modern diagnostic methods, such as real-time PCR, have improved detection rates but can also identify viral shedding in asymptomatic children, making clinical interpretation challenging . Using viral load measurements alongside clinical severity scores can help distinguish between asymptomatic shedding and true disease .
Management and Treatment Strategies
Most cases of pediatric viral gastroenteritis are self-limiting and can be managed with supportive care Monson1986Leung2021. Oral rehydration therapy is the mainstay of treatment and is as effective as intravenous fluids for mild to moderate dehydration Monson1986Leung2021. Early resumption of feeding, including continued breastfeeding, is recommended . Hospitalization and laboratory testing are reserved for children with severe dehydration or complications Monson1986Leung2021. Medications like ondansetron may help reduce vomiting and improve the success of oral rehydration .
Prevention and Vaccination
Prevention focuses on good hygiene practices, such as handwashing and safe food handling, to reduce fecal-oral transmission Leung2021Jin2016Inouye2000. Rotavirus vaccination has significantly reduced the incidence and severity of rotavirus gastroenteritis Leung2021Jin2016. However, norovirus has become a more prominent cause, and the development of effective norovirus vaccines is now a priority, with several candidates in clinical trials Wenjia2021Leung2021Jin2016. Ongoing surveillance is important to monitor changes in circulating viral strains and to guide vaccine development Wenjia2021Jin2016Mojahed2022.
Conclusion
Pediatric viral gastroenteritis remains a significant health concern, especially in young children. While rotavirus vaccination has shifted the landscape, norovirus and other viruses continue to cause substantial illness. Effective management relies on supportive care, and prevention depends on vaccination and hygiene. Continued surveillance and vaccine development are essential to further reduce the burden of this disease Wenjia2021Leung2021Jin2016+2 MORE.
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Pediatric viral gastroenteritis during eight years of study
Pediatric viral gastroenteritis is common in children aged 7-24 months, with rotaviruses being the most common cause, and viral infections peaking in November through July.
Pediatric viral gastroenteritis.
Oral rehydration therapy is a safe and effective treatment for pediatric viral gastroenteritis, reducing dehydration and acidosis.
Etiological characteristics of viral gastroenteritis in pediatric inpatients under five years old in Shanghai, 2018–2020
Calicivirus vaccine development is more urgent than rotavirus vaccine development, as calicivirus detection rates are higher than rotavirus detection rates in pediatric inpatients in Shanghai.
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