The Calumet County, Wisconsin, Leptospirae survey.
D000372:Agglutination Tests / Q000379:methods; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000276:immunology; D007922:Leptospirosis / Q000453:epidemiology / Q000276:immunology / Q000662:veterinary*; D014922:Wisconsin