The term “ehrlichiosis” may be broadly applied to several different infections. Ehrlichia chaffeensis and Ehrlichia ewingii are transmitted by the lonestar tick in the southeastern and south-central United States. Symptoms of Ehrlichia infection typically develop 1-2 weeks after being bitten by an infected tick, and can resemble other tick borne diseases, such as Rocky Mountain spotted fever and anaplasmosis. Untreated or improperly treated infections can result in difficulty breathing and/or bleeding disorders.
Signs and Symptoms
- Muscle pain
- Nausea / Vomiting / Diarrhea
- Conjunctival injection (red eyes)
- Rash (in up to 60% of children, less than 30% of adults)
Intragranulocytic morula associated with Ehrlichia infection.
Image courtesy of the CDC.