a1 Institute for Research on Animal Diseases, Compton, Newbury, Berkshire
a2 Department of Zoology, Royal Holloway College, (University of London), Englefield Green, Surrey
One thousand two hundred and sixty-nine freeliving, wild mammals, representative of 16 species from estates in Berkshire, Oxfordshire and Surrey, were examined for the presence of salmonellas. Salmonella typhimurium was isolated from 1 and S. dublin from 7 house mice (Mus musculus). There were no isolations from the other species examined. It was concluded that the house-mice infected with S. dublin acquired the organism from experimentally infected cattle.
The wild mammal population does not at present appear to constitute a reservoir for infection of domestic animals.
(Received November 18 1975)