Medical Dictionary

Colorado tick fever

noun Col·o·ra·do tick fever \ ˌkäl-ə-ˈrad-(ˌ)ō-, -ˈräd- \

medical Definition of Colorado tick fever

:a mild disease of the western United States and western Canada that is characterized by intermittent fever, malaise, headaches, myalgia, and the absence of a rash and is caused by a reovirus (species Colorado tick fever virus of the genus Coltivirus) transmitted by the Rocky Mountain wood tick
  • Colorado tick fever is caused by a virus that replicates in blood-forming stem cells, prompting blood count to drop.
  • —Daniel C. WeaverDiscoverJuly 1999

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