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Case Report: A Case of Colorado Tick Fever Acquired in Southwestern Saskatchewan

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  • 1 Cadham Provincial Laboratory, Winnipeg, Manitoba, Canada;
  • 2 Department of Medical Microbiology and Infectious Diseases, Max Rady College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada;
  • 3 Department of Immunology, Max Rady College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada;
  • 4 Department of Internal Medicine, Max Rady College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada;
  • 5 Department of Emergency Medicine, Max Rady College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada;
  • 6 Diagnostic Services Manitoba, Winnipeg, Manitoba, Canada

Colorado tick fever virus is transmitted by Dermacentor andersoni ticks. In Canada, these ticks are found in the southern regions of British Columbia (Rocky Mountains) and Alberta, as well as southwestern Saskatchewan. Colorado tick fever should be clinically suspected in patients presenting with a biphasic febrile illness and leukopenia following tick exposure in the appropriate geographic area.

Author Notes

Address correspondence to Andrew Walkty, MS673B Microbiology, Health Sciences Centre, 820 Sherbrook St., Winnipeg, Manitoba, R3A 1R9, Canada. E-mail: awalkty@dsmanitoba.ca

Authors’ addresses: Kamran Kadkhoda, Cadham Provincial Laboratory, Winnipeg, Manitoba, Canada, E-mail: kamran.kadkhoda@gov.mb.ca. Michael Semus, Department of Internal Medicine, Max Rady College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada, E-mail: msemus1@exchange.hsc.mb.ca. Tom Jelic, Department of Emergency Medicine, Max Rady College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada, E-mail: tjelic@gmail.com. Andrew Walkty, MS673B Microbiology, Health Sciences Centre, Winnipeg, Manitoba, Canada, E-mail: awalkty@dsmanitoba.ca.

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