Article
Article
Heartwater disease
Article By:
Kocan, Katherine M. Department of Veterinary Pathology, Oklahoma State University, Stillwater, Oklahoma.
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.310100
A rickettsial disease, also known as cowdriosis, which is caused by the microorganism Ehrlichia ruminantium and transmitted to ruminants by ticks of the genus Amblyomma. Heartwater disease is a tickborne disease of wild and domestic ruminants, primarily cattle, sheep, and goats, in sub-Saharan Africa and some Caribbean islands (for example, Guadeloupe, Antigua, and Marie-Galante). It is a major obstacle to improvement of livestock production in Africa. The causative agent is a rickettsial bacterium, Ehrlichia ruminantium (formerly Cowdria ruminantium). See also: Bacteria; Ixodides; Rickettsioses
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