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