Fight The Bite: San Francisco

Mosquitos and West Nile

West Nile Virus is transmitted by mosquitoes and spread by migrating birds. Disease in humans is rare, but its consequences can be severe. If you develop an illness with high fever, headache, stiff neck, confusion, or muscle weakness, see your doctor immediately.

West Nile Virus Hotline: (877) WNV-BIRD (877-968-2473)