West Nile Virus and Lyme Disease

West Nile Virus and Lyme Disease


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Now that the West Nile Virus (WNV) has made an appearance in Perth County in 2003 (crows found in Mitchell and Listowel have tested positive), it is even more important for residents of Perth South to protect themselves from mosquito bites.

When mosquitoes are active the Health Unit recommends local residents take the following measures:

  • use an insect repellent when outdoors. Repellents containing DEET are the most effective and longest lasting. Follow the manufacturer’s directions carefully
  • wear light-coloured clothing, long-sleeved shirts, pants and socks
  • try to avoid mosquitoes when they are most active, between dusk and dawn. 


West Nile Virus is spread to humans through the bite of an infected mosquito.  Mosquitoes get the virus by feeding on infected birds. The majority of people who are infected with WNV do not get sick. Those who do become ill usually experience mild flu-like symptoms, and less than 1% of people infected get seriously ill. Persons over the age of 50 are more likely to develop serious illness.

Dead crows are important when looking for WNV in the area, so if you see a dead crow, call the Perth District Health Unit.  For more information on the West Nile Virus, call Health Line at 271-7600, ext. 267. You can also visit the Perth District Health Unit’s Website at www.pdhu.on.ca.


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