Number of Zika virus cases in the U.S. from 2015 to 2020

This table shows the number of Zika virus disease cases in the U.S. from 2015 to 2020. In 2017, there were over 452 cases of the Zika virus in the U.S. However, this number decreased to 74 in 2018. The World Health Organization announced an end to the Zika virus epidemic that spread from Brazil to other parts of South and North America in November 2016.

Laboratory-confirmed Zika virus cases in the United States from 2015 to 2020

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Release date

May 2020


United States

Survey time period

2015 to 2020

Supplementary notes

* Includes reported confirmed and probable Zika virus disease cases per the CSTE case definitions.
** Presumptive viremic blood donors are people who reported no symptoms at the time of donating blood, but whose blood tested positive when screened for the presence of Zika virus RNA by the blood collection agency. Some presumptive viremic blood donors develop symptoms after their donation or may have had symptoms in the past. These individuals may be reported as both Zika virus disease cases and presumptive viremic blood donors.
^ Provisional data for 2019 as of April 30, 2020.
^^ Provisional data for 2020 as of May 13, 2020.
Excludes the territories of American Samoa, Puerto Rico, and U.S. Virgin Islands.

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Statistics on "Zika virus epidemic"

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