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    Anaplasmosis

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    Anaplasmosis

    Anaplasmosis is a tickborne disease caused by the bacterium Anaplasma phagocytophilum.

    Learn more

    Anaplasmosis is a disease caused by the bacterium Anaplasma phagocytophilum. These bacteria are spread to people by tick bites primarily from the blacklegged tick (Ixodes scapularis) and the western blacklegged tick (Ixodes pacificus).

    People with anaplasmosis will often have fever, headache, chills, and muscle aches. Doxycycline is the drug of choice for adults and children of all ages with anaplasmosis.

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    Doxycycline and Tooth Staining
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    New training tools on the diagnosis and treatment of ehrlichiosis and anaplasmosis continuing education button.

    Doxycycline saves lives button.

    Key Resources
    • Epidemiology and statistics
    • MMWR pdf icon[PDF – 48 pages]
    • Tickborne Disease Manual

    MMWR Diagnosis and Management of Tickborne Rickettsial Diseases: Rocky Mountain Spotted Fever and Other Spotted Fever Group Rickettsioses, Ehrlichioses, and Anaplasmosis - United States

    MMWR – Diagnosis and Management of Tickborne Rickettsial Diseases: Rocky Mountain Spotted Fever and Other Spotted Fever Group Rickettsioses, Ehrlichioses, and Anaplasmosis — United States pdf icon[PDF – 48 pages]

    clip art image of a can of bug repellent.
    Avoid ticks
    The first step for preventing this devastating disease is to prevent tick bites.
    Clip art image of a tick being pulled from skin by a pair of tweezers.
    Remove ticks
    If you find a tick attached to your skin, there’s no need to panic—the key is to remove the tick as soon as possible.
    Map of the U.S. showing where American dog ticks can be found. They can be located in the eastern half of the U.S. and California.
    Where ticks live
    Not all ticks bite and transmit disease to people. Find out what which ticks are spreading disease in your area.
    Page last reviewed: May 9, 2022
    Content source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Vector-Borne Diseases (DVBD)
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      • Transmission and Epidemiology
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      • Anaplasma Co-infections
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    • Research on Doxycycline and Tooth Staining
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