Dog Ehrlichiosis: Tick-Borne Disease Welfare

Ehrlichiosis is a serious tick-borne bacterial disease in dogs causing multi-systemic illness and, in chronic cases, life-threatening bone marrow failure.

Key Facts

Caused by Ehrlichia canis transmitted by the brown dog tick Rhipicephalus sanguineus
Three phases: acute (fever, lethargy, weight loss), subclinical, and chronic with severe pancytopenia
Chronic ehrlichiosis causes bone marrow suppression with dangerously low platelets and white blood cells
German Shepherds appear predisposed to severe chronic disease
Diagnosis via PCR or serology; treatment with doxycycline for minimum 28 days
Thrombocytopenia leads to spontaneous bleeding including retinal hemorrhage and nosebleeds
Without treatment, chronic ehrlichiosis has high mortality; treated acutely, prognosis is excellent

Welfare Considerations

Acute ehrlichiosis causes significant systemic illness with fever, lethargy, and pain. Chronic disease with bone marrow suppression causes spontaneous bleeding and severe immune compromise, causing progressive deterioration. The tick vector's ability to infest homes and kennels means infection can recur in endemic areas. Tick prevention and rapid treatment of acute illness prevents progression to devastating chronic disease.

What You Can Do

Use veterinarian-recommended tick prevention products for dogs in ehrlichiosis-endemic areas
Seek veterinary evaluation urgently if your dog develops fever and lethargy with known tick exposure
Request CBC testing including platelet count in dogs from ehrlichiosis-endemic regions showing illness
Complete the full doxycycline course even after clinical improvement to clear the infection
Control brown dog tick infestations in kennels and homes with appropriate environmental acaricides
Perform tick checks on dogs daily in endemic areas and remove attached ticks promptly