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Colorado tick fever - Overview

Alternative Names

Mountain tick fever; Mountain fever; American mountain fever

Definition of Colorado tick fever:

Colorado tick fever is an acute viral infection spread by the bite of the Dermacentor andersoni wood tick.

Causes, incidence, and risk factors:

This disease is usually seen between March and September. Most cases occur in April, May, and June.

Risk factors are recent outdoor activity and recent tick bite.

Colorado tick fever is seen most often in Colorado. Up to 15% of campers have been exposed to the virus that causes the disease. The disease is much less common in the rest of the United States.

  • Reviewed last on: 9/15/2010
  • David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Jatin Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School; Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Naides SJ. Arthropod-borne viruses causing fever and rash syndromes. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 405.

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