Rotavirus Carriage, Asymptomatic Infection, and Disease in the First Two Years of Life. I. Virus Shedding

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Abstract
From September 1979 to July 1980 inclusive, rotaviruses were prospectively detected by electron microscopy (EM) and ELISA in 82 (29%) of 283 children under two years of age who were admitted to a general pediatric ward in Paris. Rotavirus was found in 43 (36%) of 119 children with diarrhea and in 40 (24%) of 164 children without diarrhea; thus of 83 children shedding rotavirus, 40 (48%) were not diarrheic. Virus shedding that was not associated with diarrhea was observed in 71% of neonates, in 50% of one- to six-month-old children, and in 26% of 7–24-month-old children. Rotavirus shedding was statistically correlated (P < .01) only with those cases of diarrhea with fever and vomiting (DFV syndrome). Consequently, relative risk (RR) for the DFV syndrome in patients who were shedding virus was 2.07 (P < .001) vs. 0.95 for other types of diarrhea. These observations show that asymptomatic rotaviral infection is not an infrequent occurrence; that the association between rotavirus and diarrhea is not necessarily an etiologic one; and that the DFV syndrome appears as a major clinical expression of rotaviral disease. Consequently, recovery of rotavirus from feces is of little diagnostic significance since it does not give a differentiation between rotavirus-induced and rotavirus-associated diarrhea.

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