An outbreak of salmonellosis in newly imported cynomolgus monkeys.

Serious salmonellosis occurred in groups of cynomolgus monkeys newly imported into Tsukuba Primate Center for Medical Science from the Philippines in 1985. During the quarantine period, Salmonella typhimurium (29 strains) and S. stanley (1 strain) were isolated from 30 of 130 imported monkeys. Twenty-eight of the 30 infected monkeys excreted mainly watery diarrhea, and occasionally bloody mucous stool. Seven of the 28 clinical cases infected with S. typhimurium resulted in death or in moribund state. In both the small and large intestines of autopsied monkeys, acute inflammatory changes were observed.