| an infection caused by bacteria of the genus Ehrlichia, which are thought to be transmitted to humans and animals by ticks. |
ehrlichiosis ehr·lich·i·o·sis (âr-lĭk'ē-ō'sĭs)
n.
Infection with parasitic leukocytic rickettsiae especially by Ehrlichia sennetsu, which produces manifestations in humans similar to those of Rocky Mountain spotted fever.