West Nile virus weekly surveillance and monitoring

Current report week and year to date totaltable 1 note * of West Nile virus clinical cases and asymptomatic infections, as of September 7, 2019
Province/territory Week 36 Year-to-date Totaltable 1 note *
British Columbia 0 1
Alberta 0 0
Saskatchewan table 1 note ± - -
Manitoba 0 0
Ontario 0 3
Quebec 0 1
Newfoundland and Labrador 0 0
Prince Edward Island 0 0
Nova Scotia 0 0
New Brunswick 0 0
Yukon Territory 0 0
Northwest Territories 0 0
Nunavut 0 0
Canada 0 5

Table 1 notes

Table 1 note *

Latest case counts reflect the most recent data available (as of September 7). This table is updated as new information becomes available.

Total clinical cases are the sum of confirmed and probable: WNV neurological, and non-neurological syndromes, and along with any unclassified or unspecified cases.

Return to table 1 note * referrer

Table 1 note ±

Saskatchewan provides counts of WNV neurological syndrome cases only.

Return to table 1 note ± referrer

Summary of West Nile virus and other mosquito-borne diseases

Latest analysis: September 1 to 7, 2019 (Week 36)

  • West Nile virus in Canada:
    • Human: Five human cases have been reported to PHAC in Quebec (1), Ontario (3) and British Columbia (1) to date.
    • Mosquito: A total of 71 pools have tested positive for WNV in Manitoba (6), Ontario (55) and Quebec (10).
    • Wild Bird: Twenty-three birds have tested positive for WNV in Saskatchewan (1), Ontario (17) and Quebec (5).
    • Equine: Four horses have tested positive for WNV in British Columbia (1), Saskatchewan (1), Alberta (1) and Quebec (1).
  • Other mosquito-borne diseases of interest:
    • No human cases of Eastern Equine Encephalitis virus (EEEV) have been reported to PHAC. Six horses have tested positive for EEEV in Ontario (6).
    • No human cases/exposures of California serogroup virus have been reported.

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

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