West Nile virus and other mosquito-borne diseases in Canada: Surveillance and monitoring

2022 situation update: up to Week 40 (ending October 8, 2022)

West Nile virus update

  • To date, 22 human cases have been reported in Manitoba (4) and Ontario (18).
  • Positive wild birds were detected in Manitoba (8), Ontario (46) and Québec (54).
  • Positive mosquito pools were detected in Manitoba (39) and Ontario (89).
  • 8 positive equine cases have been reported in Québec (1), Saskatchewan (5) and Manitoba (2).

Other mosquito-borne diseases of interest in Canada

  • No cases of Eastern equine encephalitis (EEE) virus in humans or horses have been reported to the Public Health Agency of Canada (PHAC).
  • No infections of California serogroup (CSG) viruses in humans have been reported to PHAC.

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