An enzyme immunoassay for astrovirus was used to screen 357 stool samples from 267 symptomatic inpatients at a tertiary-care children’s hospital. Thirty stool samples from 26 patients contained astrovirus antigen, while rotavirus was found in 34 samples andClostridium difficile toxin was found in 40. Half of the astrovirus infections were nosocomial. Additional pathogens were identified in six of the astrovirus antigen-positive stool samples. Most (80%) of the astroviruses recovered were of serotype 1. Astrovirus infections were significantly more common than rotavirus orC. difficile infections in very young infants and in those with surgical short-bowel syndrome.
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