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Human ehrlichiosis is a zoonotic infection in humans transmitted by a variety of tick species. The genus Ehrlichiae are characterized by small, rounded gram-negative cocci that invade white blood cells.
It is quite similar to the rocky mountain spotted fever, but rash is not seen in patients.
The causative organism are Ehrlichia chaffenesis, and E. equii.
The incubation period of the disease is one week.
Cases are usually seen during summer.
For treatment, tetracycline or doxycycline is used.
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