2017 West Nile Virus Surveillance

West Nile virus activity is determined by the surveillance of:

  1. mosquito larvae
  2. adult mosquito pools
  3. human cases

Protect yourself. Wear long-sleeved shirts, long pants, socks and shoes when outdoors in the evening or early morning. Use an insect repellent approved by the Pest Management Regulatory Agency (PMRA).

Remove standing water. Remove or change all standing water around your home to reduce potential mosquito breeding areas.

West Nile virus Surveillance Halton Region 2017

Week of September 24- 30, 2017

Halton Total Burlington  Oakville Halton Hills Milton
Mosquito Pools Positive for WNV Reported 0 0 0 0 0
#  Probable Human Cases Reported 0
0 0 0 0
#  Confirmed Human Cases Reported 0 0 0 0 0
#  Larvicide Applications to Standing Water 1 0 1 0 0

Year to Date 2017

Halton Total Burlington  Oakville Halton Hills Milton
Mosquito Pools Positive for WNV Reported 36 12 14 2 8
# Probable Human Cases Reported 0
0 0 0 0
# Confirmed Human Cases Reported 6 5 0 0 1
# Larvicide Applications to Standing Water 606 109 300 96 101

Prevention and Control Measures

1 standing water sites were larvicided during the week of September 24, 2017.

  • 1 in Oakville
  • 0 in Halton Hills
  • 0 in Burlington
  • 0 in Milton

The fourth round of catch basin larviciding has begun and the indicator colour is green.

For more information about West Nile virus, please call the Halton Region Health Department.