Mosquito Bites: Everyone is at Risk!


Mosquito bites can make you sick

Disease epidemics from viruses spread by mosquitoes are happening more often, including the recent Zika (2015-2017) and chikungunya (2013-2014) epidemics. West Nile virus is the most common virus spread by mosquitoes in the continental United States. In the United States, people can also get sick from less common viruses spread by mosquitoes, like La Crosse encephalitis or St. Louis encephalitis. From 2004 to 2016, most US cases of dengue, chikungunya, and Zika were reported in US territories.

Protect against mosquito bites

  • Use insect repellent: When used as directed, Environmental Protection Agency (EPA)-registered insect repellents are proven safe and effective, even for pregnant and breastfeeding women. Use an (EPA)-registered insect repellentexternal icon with one of the following active ingredients:
    • DEET
    • Picaridin
    • IR3535
    • Oil of lemon eucalyptus (OLE)
    • Para-menthane-diol (PMD)
    • 2-undecanone
  • Cover up: Wear long-sleeved shirts and long pants.
  • Keep mosquitoes outside: Use air conditioning or window and door screens. If you are not able to protect yourself from mosquitoes inside your home or hotel, sleep under a mosquito bed net.

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Planning a trip?

Make a check list of everything you’ll need for an enjoyable vacation and use the following resources to help you prepare.

  • Learn about destination-specific health risks and recommendations by visiting CDC Travelers’ Health website.
  • Pack a travel health kit. Remember to pack insect repellent and use it as directed to prevent mosquito bites.
  • See a healthcare provider familiar with travel medicine, ideally 4 to 6 weeks before your trip.
  • Go to the Find a Clinic webpage for help in finding a travel medicine clinic near you.

Do your homework before you travel

For most viruses spread by mosquitoes, no vaccines or medicines are available. However, vaccines are available for viruses like Japanese encephalitis and yellow fever. Travelers to areas with risk of those viruses should get vaccinated.

After traveling

  • Even if they do not feel sick, travelers should prevent mosquito bites for 3 weeks after their trip so they do not spread viruses like dengue, Zika, or chikungunya to uninfected mosquitoes.
  • If you have been travelling and have symptoms including fever, headache, muscle and joint pain, and rash, see your healthcare provider immediately and be sure to share your travel history.

What can state and local public health agencies do?

  • Build and sustain public health programs that test and track diseases and mosquitoes that spread them. .
  • Train vector control staff on five core competenciesexternal icon for conducting prevention and control activities.
  • Educate the public about how to prevent control mosquito-borne diseases in their communities.

What is CDC doing?

  • Funding states and territories to detect and respond to infections from mosquitoes, ticks, and fleas and report cases to CDC.
  • Partnering with local and tribal health departments, industry, universities, and international groups to detect and respond to diseases from mosquito .
  • Supporting five regional centers of excellence to address emerging diseases from mosquitoes and ticks.
  • Developing and improving laboratory and diagnostic tests for these diseases.
  • Educating the public about protecting themselves from diseases caused by the bite of an infected mosquito.

Remember, everyone can help control mosquitoes. Take action to protect yourself, your family, and your community: use insect repellent, cover up, and keep mosquitoes outside. For more information about CDC’s work on vector-borne diseases, please visit:

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