Colorado tick fever

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Colorado tick fever

 [kol″ŏ-rah´do]
a febrile disease occurring in the Rocky Mountain and Pacific slope regions of the United States and Canada; it is caused by a virus and the vector is a tick, Dermacentor andersoni. The accompanying fever and flulike symptoms occur in two phases with a period of remission in between.

Col·o·ra·do tick fe·ver

an infection caused by Colorado tick fever virus and transmitted to humans by Dermacentor andersoni; the symptoms are mild, there is no rash, the temperature is not excessively elevated, and the disease is rarely, if ever, fatal.

Colorado tick fever

a relatively mild, self-limited arbovirus infection transmitted to humans by the bite of the wood tick Dermacentor andersoni. It is endemic in the mountainous regions above 5000 feet in the western United States and Canada and is most prevalent in the spring and summer months. The virus has been isolated from D. andersoni ticks in Alberta and British Columbia. It occurs most frequently in those with recreational or occupational exposure (hiking or fishing) in enzootic loci. Symptoms, which appear 3 to 6 days after the tick bite, occur in two phases separated by a period of remission and include chills, fever, and headache; pain in the eyes, legs, and back; and sensitivity to light. Treatment is supportive; analgesics can be given for headache and other pains. Also called American mountain fever, mountain fever, mountain tick fever. Compare Rocky Mountain spotted fever.
A rare acute tick-borne—vector, Dermacentor andersoni—RNA orbiviral infection occurring in the early spring in the Rocky Mountains
Management Tick removal, acetaminophen for fever
Prognosis Excellent; self-limited with little neurologic or other residua

Colorado tick fever

American mountain fever, mountain fever, mountain tick fever Infectious disease A rare acute tick-borne–vector, Dermacentor andersoni RNA orbiviral infection occurring in the early spring in the Rocky Mountains Clinical 3 to 6 day incubation, then chills, sweats, joint pain, biphasic–'saddleback' fever, myalgias of the back and legs, headache, retro-orbital pain, photophobia, malaise, N&V, rash, weakness Management Tick removal, acetaminophen for fever Prognosis Excellent; self-limited with little residua

Col·o·ra·do tick fe·ver

(kol'ŏr-ah'dō tik fē'vĕr)
An infection caused by Colorado tick fever virus and transmitted to humans by Dermacentor andersoni; the symptoms are mild, there is no rash, fever is not excessive, and the disease is rarely fatal.
Synonym(s): tick fever (5) .

Colorado tick fever

a disease of humans caused by Coltivirus, transmitted from small mammals by the tick, Dermacentor andersoni.
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