When rectal swabs were examined from 672 dogs in Tehran, Iran, 52 (7-7 per cent) yielded Salmonellae of 20 different serotypes. The 672 dogs examined comprised 472 household pets, 181 kennel dogs and 19 strays. Tehy showed an incidence of 4-4 per cent, 15-5 per cent and 15-8 per cent respectively.

Salmonellae were isolated from the faeces from 17 of 170 (10%) wild house mice. Salmonella typhimurium was isolated from 10, S. typhimurium, var. Copenhagen from 2, S. thompson from 1, and S. muenchen from 4. It was concluded that house mice could be a reservoir of infection and play an important role in human and animal salmonellosis.

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