Canadian Medical Guide > Organisms > Bacteria > Gram-Negative Bacteria > Anaplasmataceae > Ehrlichia Terms and Definitions

Ehrlichia

Medical Definition:	Small, often pleomorphic, coccoid to ellipsoidal organisms occurring intracytoplasmically in circulating LYMPHOCYTES. They are the etiologic agents of tick-borne diseases of humans, DOGS, CATTLE, SHEEP, GOATS, and HORSES.
Guide Notes:	infection = EHRLICHIOSIS
Also Called:	Ehrlichia ewingii

Ehrlichia Categories.

	Ehrlichia canis - Species of gram-negative bacteria in the family ANAPLASMATACEAE, causing EHRLICHIOSIS in DOGS. The most common vector is the brown dog tick. It can also cause disease in humans.
	Ehrlichia chaffeensis - A species of gram-negative bacteria that is the causative agent of human EHRLICHIOSIS. This organism was first discovered at Fort Chaffee, Arkansas, when blood samples from suspected human ehrlichiosis patients were studied.
	Ehrlichia ruminantium - A species of gram-negative bacteria in the family ANAPLASMATACEAE, that causes HEARTWATER DISEASE in ruminants.

Ehrlichia Medical Definitions and Terms

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