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Published on: July 22, 2012
Astrovirus and adenovirus associated with diarrhea in children in day care settings
1Division of Viral and Rickettsial Diseases, Centers for Disease Control, Atlanta, GA 30333.
Insights
Astrovirus is a significant cause of diarrhea in U.S. daycare children. While adenoviruses were also present, astrovirus showed a clear association with illness, suggesting viruses are key pathogens.
Area of Science:
- Pediatric Infectious Diseases
- Virology
- Public Health
Background:
- Diarrhea is a common illness in children attending daycare.
- The specific viral etiologies, particularly astrovirus and adenovirus, require further investigation in this setting.
Purpose of the Study:
- To determine the relative importance of astrovirus and adenoviruses as causes of diarrhea in U.S. daycare settings.
- To compare the prevalence of these viral infections in children with and without diarrhea.
Main Methods:
- Prospective study analyzing stool specimens from children in daycare.
- Utilized new indirect double-antibody assays for astrovirus and adenovirus hexon detection.
- Employed EIA for specific detection of enteric adenoviruses (serotypes 40 and 41).
Main Results:
- Astrovirus was significantly more prevalent in children with diarrhea (4%) compared to those without (<1%).
- Adenovirus detection showed no significant difference between children with (8%) and without (8%) diarrhea.
- Enteric adenoviruses were detected in 2% of children, with no difference based on diarrhea status.
Conclusions:
- Astrovirus is significantly associated with diarrhea in U.S. daycare attendees.
- Viral agents, including astrovirus and enteric adenoviruses, are common enteric pathogens in this population.
- This study highlights the role of astrovirus in pediatric diarrhea within daycare environments.
Abstract:
The relative importance of astrovirus and adenoviruses as etiologic agents of diarrhea among children in day care was examined. Stool specimens from this prospective study were screened for both astrovirus and adenovirus hexon with two new indirect double-antibody assays and for enteric adenoviruses with an EIA specific for serotypes 40 and 41. Astrovirus was detected in a significantly greater percentage of children with diarrhea (4%, 21/524) than of those without (less than 1%, 1/138) (P less than .05); however, no difference between such such children with adenovirus infections was found (8%, 43/565, and 8%, 10/129, respectively). Overall, 30% (13/43) of all adenovirus hexon-positive specimens were enteric serotypes, and by extrapolation, enteric adenoviruses were identified in an equal percentage of children (2%) with and without diarrhea. This study documents the presence of astrovirus and enteric adenoviruses among children in day care in the United States, associates astrovirus with diarrhea in this setting, and suggests that viral agents may be the most common enteric pathogens among children with diarrhea in day care.
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