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West Nile Virus

West Nile virus (WNV) is a mosquito-borne virus that can cause neurological symptoms. The virus is spread to humans by the bite of an infected mosquito (that has become a carrier of WNV by biting an infected bird). The virus cannot be spread from person to person.

As a community member, you can help control the spread of WNV by mosquito-proofing your home, reducing the places that will attract mosquitoes, and protecting yourself from these insects.

To learn more about WNV, its symptoms, treatment and ways to reduce the risk of infection, visit:

For information about insect repellents, and how to choose and safely use them for adults and children, visit:

West Nile virus surveillance in eastern Ontario

The Eastern Ontario Health Unit is mandated by the government to monitor WNV in the five Eastern Counties. To do so, the EOHU collects and monitors mosquitoes to determine the types of mosquitoes breeding in the area. Some breeds of mosquitoes are WNV carriers, while other breeds don't seem to carry the virus. Monitoring is a good way to determine if the population is at risk of the virus.

When WNV is detected in the local mosquito population, the EOHU will advise the public. For updates, please check the EOHU website regularly and follow us on social media.

Eastern Ontatio Health Unit / Bureau de santé de l'Ontario