Colorado tick fever (CTF) is a viral infection (Coltivirus) transmitted from the bite of an infected Rocky Mountain wood tick (Dermacentor andersoni). It should not be confused with the bacterial tick-borne infection, Rocky Mountain spotted fever. CTF is transmitted to humans most commonly by the bite of an infected adult wood tick, and while there is no evidence of natural person-to-person transmission, rare cases of transmission by blood transfusion have been reported. In general, adult ticks are approximately the size of a sesame seed and nymphal ticks are approximately the size of a poppy seed. The Lyme disease bacterium, Borrelia burgdorferi, is spread through the bite of infected ticks. Symptoms include:
- fever up to 105°F.
- chills.
- severe headache.
- light sensitivity.
- muscle aches.
- skin tenderness.
- loss of appetite.
Tick-borne diseases and infestations |
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| Diseases | | Bacterial infections | | Rickettsiales |
- Anaplasmosis
- Boutonneuse fever
- Ehrlichiosis (Human granulocytic, Human monocytotropic, Human E. ewingii infection)
- Scrub typhus
- Spotted fever rickettsiosis
- Pacific Coast tick fever
- American tick bite fever
- rickettsialpox
- Rocky Mountain spotted fever)
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| Spirochaete |
- Baggio–Yoshinari syndrome
- Lyme disease
- Relapsing fever borreliosis
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| Thiotrichales | |
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| Viral infections |
- Bhanja virus
- Bourbon virus
- Colorado tick fever
- Crimean–Congo hemorrhagic fever
- Heartland bandavirus
- Kemerovo tickborne viral fever
- Kyasanur Forest disease
- Omsk hemorrhagic fever
- Powassan encephalitis
- Severe fever with thrombocytopenia syndrome
- Tete orthobunyavirus
- Tick-borne encephalitis
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| Protozoan infections | |
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| Other diseases |
- Tick paralysis
- Alpha-gal allergy
- Southern tick-associated rash illness
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| Infestations | |
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| Species and bites | | Amblyomma |
- Amblyomma americanum
- Amblyomma cajennense
- Amblyomma triguttatum
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| Dermacentor |
- Dermacentor andersoni
- Dermacentor variabilis
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| Ixodes |
- Ixodes cornuatus
- Ixodes holocyclus
- Ixodes pacificus
- Ixodes ricinus
- Ixodes scapularis
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| Ornithodoros |
- Ornithodoros gurneyi
- Ornithodoros hermsi
- Ornithodoros moubata
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| Other | |
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