Colorado tick fever A94.x

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

Colorado tick fever

Definition
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Self-limiting infectious disease caused by arboviruses.

Pathogen
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Reoviruses

Occurrence/Epidemiology
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North America. Endemic especially in the area of Colorado (Rocky Mountains). 10-20% of the inhabitants or tourists are infected with the pathogen at least once during their lifetime.

Etiopathogenesis
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Viral infection transmitted by Dermatocentor andersoni (thyroid tick).

Clinical features
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  • Myalgia, back, eye and headaches, laryngopharyngitis, fever and vomiting.
  • Optional: petechial haemorrhages in the articular arches or generalized maculopapular exanthema. Incubation period 4-6 days, duration 1-2 weeks.

Therapy
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Symptomatic: Antipyretic with calf compresses, possibly antipyretic and pain-reducing with paracetamol (e.g. Ben-u-ron) or acetosalicylic acid (e.g. aspirin) 3 times 500 mg/day, gargling with anti-inflammatory solutions such as 5% dexpanthenol solution R066 or chamomile extracts (e.g. Kamillosan). Usually healing after 1-2 weeks.

Literature
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  1. Klasco R (2002) Colorado tick fever. Med Clin North Am 86: 435-440
  2. Mohd Jaafar F et al (2003) Recombinant VP7-based enzyme-linked immunosorbent assay for detection of immunoglobulin G antibodies to Colorado tick fever virus. J Clin Microbiol 41: 2102-2105
  3. Zaidi SA, Singer C (2002) Gastrointestinal and hepatic manifestations of tickborne diseases in the United States. Clin Infect Dis 34: 1206-1212

Disclaimer

Please ask your physician for a reliable diagnosis. This website is only meant as a reference.

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Last updated on: 29.10.2020