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[[Ehrlichia ondiri]]
 
[[Ehrlichia ondiri]]
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===Tick-borne fever===
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[[Ehrlichia phagocytophila]]
 
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*Caused by ''E. phagocytophila''
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*Affects ruminants in Europe
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*The tick ''Ixodes ricinis'' is the main vector
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*Animals remain carriers for up to 2 years, but are immune to reinfection
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*Clinical signs
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**Incubation period of 2 weeks; recovery in 2 weeks
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**Fever, anorexia, reduced growth rates in young animals
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**Reduced milk production, abortion, still birth
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**Leukopenia and thrombocytopenia
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**Causes immunosuppression in young lambs causing susceptibility to tick pyaemia and louping ill
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*Diagnosis
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**Intracytoplasmic morulae in [[Neutrophils - WikiBlood|neutrophils]] of Giemsa-stained blood smears during acute phase
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**Seroconversion detected by immunofluorescence
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*Treatment and control
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**Oxtetracycline
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**Tick control
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**Prophylactic tetracyclines for lambs during first few weeks of life
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===Heartwater===
 
===Heartwater===
Author, Donkey, Bureaucrats, Administrators
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