Caused by Ehrlichia canis,
and transmitted by ticks (Rhipicephalus
sanguineus), canine ehrlichiosis is seen in the Americas, Africa, Asia and Southern
Acute phase of the disease is often mild, but may
be accompanied by depression, anorexia and pyrexia
Dogs may eliminate infection after the acute phase
or go on to develop chronic infection which may last several years.
Chronically infected dogs often appear clinically
healthy, but some develop:
anaemia (due to decreased platelet survival)
episodic haemorrhage and may die.
Diagnosis is based on finding ticks during the acute
phase, haematology including demonstration of rickettsia in mononuclear cells
or neutrophils, and serology.
Treatment is with oxytetracycline (22 mg/kg three
times daily for 2-3 weeks) doxycycline (5-10 mg/kg twice daily for one week.)
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