Tuesday, November 1, 2022

Sapovirus infections in an Australian community-based healthy birth cohort during the first 2-years of life

alexandrossfakianakis shared this article with you from Inoreader

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Abstract
Background
Sapovirus is an important cause of acute gastroenteritis (AGE) in young children. However, knowledge gaps remain in community settings. We investigated the epidemiology, disease characteristics and healthcare use associated with sapovirus infections in Australian children during their first 2-years of life.
Methods
Children in the Brisbane-based Observational Research in Childhood Infectious Diseases birth cohort provided daily gastrointestin al symptoms (vomiting/loose stools), weekly stool swabs, and healthcare data until age 2-years. Swabs were batch-tested for sapovirus using real-time polymerase chain reaction assays. Incidence rates and estimates of associations were calculated.
Results
Overall, 158 children returned 11,124 swabs. There were 192 sapovirus infection episodes. The incidence rate (IR) in the first 2-years of life was 0.89 episodes per child-year (95% confidence interval [CI] 0.76–1.05), the symptomatic IR was 0.26 episodes per child-year (95%CI 0.17–0.37). Age ≥6-months, the fall season and childcare attendance, increased disease incidence significantly. Fifty-four (30%) of the 180 infections with linked symptom diaries were symptomatic, with 72% recording vomiting and 48% diarrhea. Prior infection reduced risk of further infections (adjusted hazard risk 0.70; 95%CI 0.54–0.81) in the study period. Viral loads were higher and viral shedding duration was longer in symptomatic than asymp tomatic children. Twenty-three (43%) symptomatic episodes required healthcare, including six emergency department presentations and two hospitalizations.
Conclusion
Sapovirus infections are common in Australian children aged 6–23 months. Efforts to reduce childhood AGE after the global rollout of rotavirus vaccines should include sapovirus where estimates of its incidence in communities will be crucial.
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