WEST NILE VIRUS
Fight the Bite
West Nile virus (WNv) is a mosquito-borne virus that can cause West Nile Non-Neurological syndrome (formerly known as West Nile fever) or occasionally the more serious West Nile Neurological Syndrome.
WNv is transmitted to humans primarily through the bite of an infected mosquito. One in five people who do become infected become ill. Severe illness associated with the virus is rare, but risk increases with age.
West Nile virus in Alberta
The first evidence of WNv in Alberta was confirmed in July 2003. During the summer of 2003, the virus was found in mosquitoes, birds, horses and humans in the province. WNv can affect anyone, but the good news is that all Albertans can take some simple steps to protect themselves. Read WNv evidence in Alberta reports on human cases, mosquito pools and horses tested.
Reduce the risk
The most effective means of reducing the risk of infection with West Nile virus is to avoid mosquito bites. Simple steps to protect yourself and your family include using a mosquito repellent containing DEET, and wearing long-sleeved shirts and pants when outdoors during periods of peak mosquito activity. Read more on reducing your risk of infection.
Tips on protecting yourself:
- Protecting Yourself from West Nile virus
- Tips for House and Garden
- Tips for Children
- Insect Repellents
- Tips for Seniors
- Tips for Outdoor Enthusiasts
- Tips for Outdoor Workers
- Tips for Animal Health
More WNv information
- Read Alberta's West Nile Virus Response Plan
- Information for Health Professionals
- Birds and Wildlife – Alberta Sustainable Resource Development. West Nile virus bird surveillance is no longer done in Alberta.
- Horses – Alberta Agriculture and Rural Development. West Nile virus surveillance program/detecting the disease in horses.
- Public Health Agency of Canada West Nile virus surveillance monitor
- The United States Centers for Disease Control and Prevention


