West Nile virus surveillance and monitoring

Summary of West Nile virus and other mosquito-borne diseases

Situation Update

West Nile virus in Canada:

  • To date, one human case, a positive wild bird and mosquito pools were detected in Ontario this year.

Other mosquito-borne diseases of interest in Canada:

  • To date, there are no human cases of Eastern Equine Encephalitis virus (EEEV). The CFIA reported one positive equine case on June 21 2021 that was detected in Ontario.  
  • No human cases/exposures of California serogroup (CSG) virus have been reported to PHAC.

For more information, visit the West Nile virus disease page.

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