I just brought up Tincup's post about Ehrlichiosis. Click on the link.
http://flash.lymenet.org/ubb/Forum1/HTML/014289.html

Human Ehrlichiosis is a disease caused by rickettsial type organisms that are transmitted in part by the SAME TICKS that carry Lyme disease. Ehrlichiosis usually presents with high fever, malaise, headache, myalgia, sweats, and nausea. Patients diagnosed with Ehrlichia should also be tested for Lyme disease due to the fact that co-infections have been documented in several patients.

There are two forms of the disease caused by the Ehrlichia species: E. chaffeensis and E. phagocytophilia, which cause the human diseases, Human Monocytic Ehrlichiosis (HME) and Human Granulocytic Ehrlichiosis (HGE), respectively. HME has been linked to the bites of Amblyomma Americanum (Lone Star Tick) and HGE has been closely linked to the bites of Ixodes Scapularis and Ixodes Pacificus. The Dermacentor Variabilis (dog tick) has also been suggested in the transmission of both. Seroconversion usually occurs between two and four weeks after infection.

HME:�����
First described in 1987 and confirmed in 30 states, predominately in the southeast and mid-atlantic states. HME has also been found in Europe and Africa.

HGE:�����
Originated in Minnesota and was first described in 1994. HGE has been found in the upper midwestem states, northeastern states, and northern California.

IgG/IgM Antibody Tests: Titer levels for IgG and IgM antibodies are given individually for HME and for HGE.