Rotavirus gastroenteritis in infants aged 0–6 months in Melbourne, Australia: Implications for vaccination

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Abstract
The aim of this study was to determine the occurrence of rotavirus infection in infants under 6 months of age who were admitted to hospital in a developed country for treatment of gastroenteritis. Between April 1980 and April 1990, 595 such infants were admitted to the infectious diseases ward at the Royal Children's Hospital, Melbourne, Australia. Faecal specimens were collected within 6h of admission and were tested for viral, bacterial and protozoal enteric pathogens. Rotaviruses of several serotypes were found in specimens from 15.1% of the infants, adenoviruses in 12.4% and other pathogens in 10.8%. Rotaviruses were found equally often in infants in each 1 month age group. No pathogens were able to be identified in 61.7% of cases. These results show that rotavirus is an important pathogen in infants under 6 months of age who are admitted to hospital with gastroenteritis. Rotavirus vaccination will need to be given during the first 1–3 months of life in developed countries, as is recommended for developing countries. The large group in whom no pathogens were isolated requires further consideration.

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