heartwater

noun

heart·​wa·​ter ˈhärt-ˌwȯt-ər, -ˌwät- 

: a serious febrile disease of sheep, goats, and cattle in southern Africa that is caused by a bacterium of the genus Ehrlichia (E. ruminantium) transmitted by a bont tick (Amblyomma hebraeum)

called also heartwater disease, heartwater fever