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See Also Data & StatisticsSee Data & Statistics on Zika and Pregnancy.

Information for Blood and Tissue Collection CentersSee information on areas of active Zika virus transmission risk for the purposes of blood and tissue safety intervention.

Provisional Data* as of April 30, 2020

Zika virus disease is a nationally notifiable condition. Cases are reported to CDC by state, territorial, and local health departments using standard case definitions. This webpage contains provisional data reported to ArboNET for 2019.

US States

22 Zika virus disease cases reported † 21 cases in travelers returning from affected areas 0 cases acquired through presumed local mosquito-borne transmission 0 cases acquired through sexual transmission 1 case acquired through laboratory exposure



US Territories

71 Zika virus disease cases reported † 1 case in travelers returning from an affected area 70 cases acquired through presumed local mosquito-borne transmission** 0 cases acquired through other routes ‡



Footnotes

*Data are provisional and might not reflect the actual number of Zika virus disease cases due to delays in reporting.

†Excludes congenital disease cases.

**These presumed locally acquired cases of Zika in the U.S. territories were diagnosed using serologic testing, which detects antibodies against Zika. Since antibodies against Zika can persist for years after infection, serology cannot distinguish between a recent or past infection. Additionally, Zika and dengue virus antibodies cross-react, making it difficult to diagnose which virus is the cause of the current illness. None of these probable cases have tested positive using molecular testing, which detects the presence of the virus in the body and is the best indicator of a recent infection. In 2019, there have been no confirmed Zika virus disease cases reported from U.S. territories. Additionally, a large number of suspect Zika cases from the territories have been tested using molecular testing and none have been positive.



‡Sexually transmitted cases are not reported for US territories because with local transmission of Zika virus it is not possible to determine whether infection occurred due to mosquito-borne or sexual transmission.

Cases by State and Territory