Leptospirosis in Nicaragua: preliminary report on the first year of study.
D000818:Animals; D000829:Animals, Domestic; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D007922:Leptospirosis / Q000453:epidemiology* / Q000662:veterinary*; D008322:Mammals; D009527:Nicaragua