[Rotavirus gastro-enteritis in infants (author's transl)].

Deviation of complement antibodies were studied in 630 hospitalized infants aged from 0 to 4 years suffering from rotavirus gastro-enteritis, over a period of one year. Seroconversion was observed in 30 cases out of the 256 infants in whom 2 serological samples were taken. In 29 cases out of 30, these rotavirus infections occurred in infants under 18 months of age, and they were all seen during ther period from november to march, rotavirus being responsible for one third of the gastro-enteritis cases. A serological study according to age-group in 640 infants gave positive results in 75 per cent (1st semester), 68 per cent (2nd semester), 75 per cent (2nd year), 78 per cent (3rd and 4th years).