| heartwater | An acute febrile disease of cattle, sheep, and goats in sub-Saharan Africa and certain islands in the Indian and Atlantic Oceans and in the Caribbean, caused by the rickettsial organism Cowdria ruminantium and transmitted by ticks of the genus Amblyomma; some species of African antelope and European and American deer also are susceptible. Synonym: cowdriosis, veldt disease. (05 Mar 2000) |
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| heartwater disease | A tick-borne septicaemic disease of ruminants caused by cowdria ruminantium. (12 Dec 1998) |