Mosquitoes and Your Safety


West Nile and Viral Encephalitis

West Nile virus is transmitted by the bite of an infected mosquito. Most infected people have either no symptoms or only mild ones, such as fever, headache, mild skin rash, or swollen lymph glands. A serious infection, though, could lead to viral encephalitis, a swelling of the brain, which can be fatal.



  • Stay indoors at dawn, dusk, and in the early evening when mosquitoes are most active.
  • Use insect repellents with DEET, according to manufacturer's instructions.
  • Wear long sleeves and long pants when possible.

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