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Colorado Tick Fever
Aka: Colorado Tick Fever
- Epidemiology
- Incidence: 200 to 300 cases per year
- Region: Most common in Rocky Mountains
- Pathophysiology
- Cause: RNA orbivirus
- Transmission: Dermacentor andersoni (wood tick)
- Risk Factors for severe infection
- Asplenic patients
- Immunocompromised patients
- Symptoms: Influenza-like illness
- Onset one week after inoculation
- Pharyngitis
- Biphasic fever
- Meningitis
- Rash
- Conjunctivitis
- Differential Diagnosis
- Tick-Borne Disease
- Labs
- Blood smear with immunofluorescent stain for virus
- Complete Blood Count
- Leukopenia
- Thrombocytopenia
- Management
- Symptomatic (no specific treatment exists)