Areas with Zika – Data

Zika virus disease is now a nationally notifiable condition. Cases are reported to CDC by state, territorial, and local health departments using standard case definitions. This web page contains provisional data reported to ArboNET for January 1, 2015 – March 15, 2017.


US States

  • 5,139 Zika virus disease cases reported
  • 4,842cases in travelers returning from affected areas
  • 222cases acquired through presumed local mosquito-borne transmission in Florida (N=215) and Texas (N=6)
  • 75 cases acquired through other routes, including sexual transmission (N=45), congenital infection (N=28), laboratory transmission (N=1), and person-to-person through an unknown route (N=1)

US Territories

  • 38,188 Zika virus disease cases reported
  • 147 cases in travelers returning from affected areas
  • 38,041 cases acquired through presumed local mosquito-borne transmission
  • 0 cases acquired through other routes*

*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.


Laboratory-confirmed symptomatic Zika virus disease cases and viremic blood donors reported to ArboNET by states and territories — United States, 2015–2017 (as of March 15, 2017)

  •              Symptomatic disease cases**
    Presumptive viremic blood donors†

    Missouri                              36(1)                                                                     0 (0)

Outcomes for Completed Pregnancies in the United States and District of Columbia, 2016-2017


         Completed pregnancies with or without birth defects: 1,143

         Liveborn infants with birth defects: 47

         Pregnancy losses with birth defects: 5

  • *As of February 21, 2017


Pregnant Women with Any Laboratory Evidence of Possible Zika Virus Infection, 2016-2017

  • US States and the District of Columbia: 1,534

    US Territories: 3,225


    Missouri Department of Health and Senior Services    2016 Reports of Mosquito-borne Disease in Humans
    Week 10 (Ending March 11, 2017)

    Total verified domestic human mosquito-borne disease cases: 0

    Total verified domestic mosquito-borne disease-related fatalities*: 0

    Imported Zika infections

    Arbovirus Case Status Laboratory






    Onset Date Fatality Hospitalized
    N/A N/A N/A N/A N/A N/A N/A


    WNV = West Nile virus

    Zika is spread mostly by the bite of an infected Aedes species mosquito. These mosquitoes are aggressive daytime biters; however, they can also bite at night. Zika can be passed from a pregnant woman to her fetus. Infection during pregnancy can cause certain birth defects. The mosquitoes that can carry the Zika virus are found in some areas of the United States; however, Zika is not currently being spread by mosquitoes in the continental United States. There is no vaccine or medicine for Zika.


    Centers of Disease Control and Prevention –

    Missouri Department of Health and Senior Services –

    World Health Organization –

    US Department of Health and Human Services –