Small ruminants are susceptible to several chlamydial and rickettsial infections. Some of them, such as Ehrlichia ruminantium, have a great impact on the sheep and goat industry while others, such as Coxiella burnetii, are important zoonotic agents. This review focuses on measures of treatment and control for the following organisms: Chlamydophila abortus (formerly Chlamydia psittaci immunotype 1), Coxiella burnetii, Anaplasma ovis, Anaplasma phagocytophilum, and Ehrlichia ruminantium.
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