Diverse serologic response to rotavirus infection of infants in a single epidemic

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Abstract
Eight infants with onset of gastroenteritis occurring within a 32-day period were examined for stool rotavirus antigen and serum antibody response to rotavirus. Each infant presented evidence of rotavirus infection but no single test for rotavirus-specific antigen or antibody was positive for every infected individual. Rotavirus was identified in the stools of five infants; in the others rotavirus etiology was determined by a specific immune response only. The neutralizing antibody response to each of four human rotavirus serotypes and to bovine rotavirus Nebraska calf diarrhea virus ranged from totally negative to a specific response to up to four serotypes. Three originally seropositive infants each showed an increase in neutralizing antibody titer to two or more serotypes. However, two of five originally seronegative infants also developed antibody to two or more serotypes. No consistent pattern of responses to different serotypes was detected.

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