Author's Organization：Department of Veterinary Microbiology, Faculty of Agriculture, Iwate University Department of Veterinary Microbiology, Faculty of Agriculture, Iwate University
Listeria monocytogenes type 1 was isolated from a larva of 0estrus ovis removed from a sheep suffering from listeria encephalitis. Biological and serological studies were made on the isolate, which was called strain K16 by the authors. The possible role of Oestrus ovis in the spread of natural infection of L. monocytogenes among sheep was discussed
