Areas with Zika

Areas with active mosquito-borne transmission of Zika virus

  • Prior to 2015, Zika virus outbreaks occurred in areas of Africa, Southeast Asia, and the Pacific Islands.
  • In May 2015, the Pan American Health Organization (PAHO) issued an alert regarding the first confirmed Zika virus infections in Brazil.
  • Currently, outbreaks are occurring in many countries.
  • Zika virus will continue to spread and it will be difficult to determine how and where the virus will spread over time.

US Territories

  • Local mosquito-borne transmission of Zika virus has been reported in the Commonwealth of Puerto Rico, the US Virgin Islands, and America Samoa.

*Territories of the United States are sub-national administrative divisions overseen by the US federal government.

US States

  • No local mosquito-borne Zika virus disease cases have been reported in US states, but there have been travel-associated cases.
  • With the recent outbreaks, the number of Zika cases among travelers visiting or returning to the United States will likely increase.
  • These imported cases could result in local spread of the virus in some areas of the United States.