Monocytic ehrlichiosis is caused by Ehrlichia chaffeensis
Ehrlichia bacteria
There are two forms of ehrlichiosis in the United States; human monocytic ehrlichiosis and human granulocytic ehrlichiosis
Monocytic ehrlichiosis
As of early 1998, about 400 cases of monocytic ehrlichiosis had been reported in 30 states, primarily in the southeastern and south central United States
A rash may occur
The bacteria that causes granulocytic ehrlichiosis is not known, but suspected to be either Ehrlichia equi or Ehrlichia phagocytophila
Many patients with ehrlichiosis are admitted to the hospital for treatment
Granulocytic ehrlichiosis is probably spread by the blacklegged tick Ixodes scapularis
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