[Institutional epidemic gastroenteritis caused by Salmonella enteritis Worthington type in 1976]

An outbreak of gastroenteritis that occurred in a boarding school in Mexico is described. The attack rate was 100% since all of 151 pupils were involved. Salmonella enteritidis serotype Worthington was identified as the only etiologic agent. This microorganism was isolated from 60% of the samples studied. Due to the delay in notification the food ingested during the outbreak could not be analyzed.