[Clinical features of rotavirus infections: influence of child age on clinical manifestations]

The aim of the present study was to describe clinical features of rotavirus infections in children and to compare the observed symptoms according to the age of the patients. Clinical files of 278 rotavirus-positive children under 5 years of age were retrospectively examined. The presence of group A rotavirus antigens in stool samples collected from children was detected by direct sandwich enzyme-linked immuno-sorbent assay. Pearson's correlation tests were used to determine the relationship between each clinical sign noticed and patients' age. Among the 278 rotavirus-positive children, 93.9% presented with diarrhea, 79.1% vomiting, 71.6% fever, 37.4% respiratory troubles, and 33.1% neurological signs. Intravenous rehydration was needed for 59.7% of the children. The comparison of clinical signs according to the age showed that diarrhea [p = 0.001], vomiting [p = 0.007], fever [p = 0.045], respiratory troubles [p = 0.01] and dehydration [p<0.001] were significantly more frequent in infants of 1 to 24 months old. The severity of rotavirus illness seems to be directly influenced by child's age. Interestingly, infants of 1 to 5 years old often presented with disease as severe as babies of 6 to 24 months old