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West Nile Virus and Mosquito Surveillance

The health unit works t​o protect the health of northwestern Ontario residents by monitoring potential health risks. To track West Nile virus (WNV) risk, the health unit does weekly mosquito trapping across the region.


2019 statistics​​

Last year, 77 samples from 12 different trap sites were sent to a lab for mosquito identification and testing. Only certain kinds of mosquitoes can carry West Nile virus. Of the 92% were not the type of mosquito that can spread West Nile virus. Last year, there were no positive human cases of WNV reported in our region and none of the mosquito pools sent for analysis tested positive for WNV.

Learn​ more:

   Preventing mosquito

   The easiest way to prevent 
   West Nile virus infection is
   to avoid mosquito bites.
   Find out how.