Vector Surveillance and Control

The maps below show CDC’s best estimate of the potential range of Aedes aegypti and Aedes albopictus in the United States. These maps include areas where mosquitoes are or have been previously found. Shaded areas on the map do not necessarily mean that there are infected mosquitoes in that area. Aedes aegypti mosquitoes are more likely to spread viruses like Zika, dengue, chikungunya and other viruses than other types of mosquitoes such as Aedes albopictus mosquitoes. More about the maps

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*Maps have been updated from a variety of sources. These maps represent CDC’s best estimate of the potential range of Aedes aegypti and Aedes albopictus in the United States. Maps are not meant to represent risk for spread of disease.

These maps DO NOT show

  • Exact locations or numbers of mosquitoes living in an area
  • Risk or likelihood that these mosquitoes will spread viruses

These maps show

  • CDC’s best estimate of the potential range of Aedes aegypti and Aedes albopictus in the United States
  • Areas where mosquitoes are or have been previously found

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How Healthy Are We?

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