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Colorado Tick Fever (CTF)
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    Colorado Tick Fever (CTF)

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    CTF is a rare viral disease spread by infected Rocky Mountain wood ticks in the western United States and western Canada.

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    Transmission
    Ticks infected by small rodents spread CTF…
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    Tick Information
    Learn about Rocky Mountain wood tick…
    Approximate geographic distribution of Dermacentor andersoni ticks and counties of residence for laboratory-confirmed Colorado tick fever virus disease cases, United States, 2002–2012 - Cases are concentrated in the Western United States
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    See where cases have occurred…
    Page last reviewed: December 3, 2018
    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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