Where has Zika virus been found?

• Prior to 2015, Zika virus outbreaks have 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 the virus will spread over time.

Zika in the United States and its territories:

• No locally transmitted Zika cases have been reported in the continental United States, but cases have been reported in returning travelers.

• Locally transmitted Zika virus has been reported in the Commonwealth of Puerto Rico, the U.S. Virgin Islands, and America Samoa.

• 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.

Countries and territories with active Zika virus transmission:

AMERICAS: Barbados; Bolivia; Brazil; Colombia; Commonwealth of Puerto Rico, US territory; Costa Rica; Curacao; Dominican Republic; Ecuador; El Salvador; French Guiana; Guadeloupe; Guatemala; Guyana; Haiti; Honduras; Jamaica; Martinique; Mexico; Nicaragua; Panama; Paraguay; Saint Martin; Suriname; U.S. Virgin Islands; Venezuela.

OCEANIA/PACIFIC ISLANDS: American Samoa; Samoa; Tonga.

AFRICA: Cape Verde.

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Stephen B. Thacker CDC Library collection