Common Exposure Outbreak of Gastroenteritis Due to Type 2 Rotavirus with High Secondary Attack Rate within Families

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Abstract
A sharp outbreak of gastroenteritis associated with human rotavirus type 2 involved not only all of nine infants and young children in a playgroup but also seven of 10 parents and grandparents studied. The source of the outbreak appeared to be two non-playgroup siblings. Six of 11 individuals studied shed human rotavirus type 2, and each of seven from whom paired sera were obtained developed a type 2 seroresponse. Overall, evidence of infection with rotavirus type 2 was demonstrated in 10 of 11 individuals by detection of virus in stools and / or a serologic response in an enzyme-linked immunosorbent assay.