Difference between revisions of "Ehrlichia phagocytophila"
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(Redirected page to Tick-Borne Fever) |
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− | + | ===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|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]] | ||
+ | [[Category:To_Do_-_Bacteria]] |
Revision as of 10:58, 25 June 2010
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 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