Clinical and serological studies were made in 62 children with various purulent infections, who were placed in the same hospital unit. The precipitation test with the antigen of monkey virus SA-11 showed that diarrhea in 32 of these children was etiologically linked with rotaviruses. The diagnostic titers of virus antibodies were detected in children having diarrhea 5.5 times as frequently as in the control group. The characteristic feature in the clinical picture of this diarrhea was the absence of the severe form.
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