West Nile Virus
Need-to-know information about West Nile Virus.
- Human infection with West Nile virus is through the bite of an infected mosquito.
- West Nile is a flavivirus that can infect humans, birds, mosquitoes, horses and some mammals.
- West Nile virus is a potentially serious illness.
- West Nile virus is established as a seasonal epidemic in North America that flares up in the summer and continues into fall. In the southern climates where temperatures are milder, West Nile virus can be transmitted year round.
Preventing West Nile Virus
The easiest and best way to avoid mosquito bites.
- To report mosquitos, call 311.
- For information about using mosquitofish, or Gambusie, to reduce mosquito larve, call 311.
- When outdoors, use insect repellants containing DEET. Follow the directions on the package.
- Mosquitoes are most active at dusk and dawn. Stay indoors during these times, or use insect repellant and wear long sleeves and pants. Light-colored clothing can help you see mosquitoes that land on you.
- Cover open windows and doors with good screens to keep mosquitoes out.
- Empty standing water from flower pots, buckets, and barrels. Standing water serves as mosquito breeding sites.
- Change the water in pet dishes. Replace the water in bird baths weekly.
- Keep children’s wading pools empty and on their sides when they aren’t in use.
Help Prevent West Nile Virus. Report Mosquitos by calling 311.
More West Nile Information
Learn more about West Nile Virus: