Zika virus case number by U.S. state 2020

This graph shows the provisional number of Zika virus disease cases by U.S. state or territory in 2020. In that year, New York reported just one symptomatic Zika virus disease cases, a huge decrease from over 1,000 cases in 2016. 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 by state or territory in 2020*

Characteristic	Symptomatic disease cases**	Presumptive viremic blood donors***
New York	1	0
Maryland	1	0
North Carolina	1	0
Virginia	1	0
Puerto Rico	57	0

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Release date

May 2021

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Region

United States

Survey time period

2020

Supplementary notes

* Provisional data as of May 25, 2021.

** 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.

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