West Nile Virus Surveillance - Halton Region

West Nile virus activity is determined by the surveillance of:

  1. mosquito larvae
  2. adult mosquito pools
  3. humans

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 2015

Week of August 23 - 29, 2015

Halton Total Burlington Oakville Halton Hills Milton
Mosquito Pools Positive for WNV Reported 2 0 2 0 0
#  Probable Human Cases Reported 1
0 1 0 0
#  Confirmed Human Cases Reported 0 0 0 0 0
#  Larvicide Applications to Standing Water 61 20 24
10 7

Year to Date 2015

Halton Total Burlington Oakville Halton Hills Milton
Mosquito Pools Positive for WNV Reported 4 1 3 0 0
# Probable Human Cases Reported 1 0 1 0 0
# Confirmed Human Cases Reported 0 0 0 0 0
# Larvicide Applications to Standing Water 788
253 319 91 125

Prevention and Control Measures

In total, sixty one sites were larvicided during the week of August 23rd to August 29th. Twenty sites are located in Burlington, seven in Milton, twenty four in Oakville, and ten in Halton Hills.
Two positive mosquito pools were reported in Halton (both in Oakville) between August 23rd and August 29th.

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