A winter outbreak of anthrax in cattle in Saskatchewan.

Anthrax was diagnosed in a cow on a ranch in southwest Saskatchewan in February of 1980. Confirmation was based on bacteriological isolation from the spleen and mesenteric lymph nodes. Evidence suggests that a creek on the ranch had carried the organisms from an area of previous infection years earlier. It is noteworthy in this case that the spleen was not enlarged. Carcass disposal, vaccination, and disinfection procedures are discussed.