Ehrlichiosis is the general name used to describe several bacterial diseases that affect animals and humans. Human ehrlichiosisis a disease caused by at least three different ehrlichial species in the United States: Ehrlichia chaffeensis, Ehrlichia ewingii, and a third Ehrlichiaspecies provisionally called Ehrlichia muris-like (EML).
Ehrlichiae are transmitted to humans by the bite of an infected tick. The lone star tick (Amblyomma americanum) is the primary vector of both Ehrlichia chaffeensis and Ehrlichia ewingii in the United States. Ehrlichiosis is a bacterial infection transmitted by the bite of a tick. Ehrlichia bacteria can be carried by the: American dog tick, Deer tick (Ixodes scapularis) -- which can also cause Lyme disease, and, Lone Star tick.
Fever, Headache ,Chills ,Malaise, Muscle pain ,Nausea / Vomiting / Diarrhea Confusion ,Conjunctival injection (red eyes), Rash (in up to 60% of children, less than 30% of adults).
Complete blood count (CBC), Granulocyte stain Indirect fluorescent antibody test, PCR testing of blood sample .
Antibiotics (tetracycline or doxycycline) are used to treat the disease. Children should not take tetracycline by mouth until after all their permanent teeth have grown in, because it can permanently change the color of growing teeth. Rifampin has also been used in patients who can not tolerate doxycycline.