Statistics and Maps

  • Prior to 2014, very few travel-associated cases of Zika virus disease were identified in the United States.
  • In 2015 and 2016, large outbreaks of Zika virus occurred in the Americas, resulting in an increase in travel-associated cases in US states, widespread transmission in Puerto Rico and the US Virgin Islands, and limited local transmission in Florida and Texas.
  • In 2017, the number of reported Zika virus disease cases in the United States started to decline.
  • In 2018 and 2019, there have been no reports of Zika virus transmission by mosquitoes in the continental United States.

Yearly case counts for US states and territories

*CDC reports provisional Zika virus disease case counts reported to ArboNET for the United States and its territories on the first Thursday of each month.