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Case Counts in the US

As of September 21, 2016 (5 am EST)

  • Zika virus disease and Zika virus congenital infection are nationally notifiable conditions.
  • This update from the CDC Arboviral Disease Branch includes provisional data reported to ArboNET for January 01, 2015 – September 21, 2016.

US States

  • Locally acquired mosquito-borne cases reported: 43
  • Travel-associated cases reported: 3,314
  • Laboratory acquired cases reported:  1
  • Total: 3,358
    • Sexually transmitted: 28
    • Guillain-Barré syndrome: 8

MAPS OF ZIKA IN THE US

US Territories

  • Locally acquired cases reported: 19,706
  • Travel-associated cases reported: 71
  • Total: 19,777*
    • Guillain-Barré syndrome: 37

*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 Zika virus disease cases reported to ArboNET by state or territory — United States, 2015–2016 (as of September 21, 2016)§
States Travel-associated cases*
No. (% of cases in states)
(N=3,315)
Locally acquired cases†
No. (% of cases in states)
(N=43)
Alabama 27    (1) 0    (0)
Arizona 29    (1) 0    (0)
Arkansas 10    (<1) 0    (0)
California 243  (7) 0    (0)
Colorado 35    (1) 0    (0)
Connecticut 58    (2) 0    (0)
Delaware 13    (<1) 0    (0)
District of Columbia 23    (1) 0    (0)
Florida 652  (20) 43    (100)
Georgia 79    (2) 0    (0)
Hawaii 12    (<1) 0    (0)
Idaho 3      (<1) 0    (0)
Illinois 67    (2) 0    (0)
Indiana 33    (1) 0    (0)
Iowa 16    (<1) 0    (0)
Kansas 14    (<1) 0    (0)
Kentucky 24    (1) 0    (0)
Louisiana 29    (1) 0    (0)
Maine 11    (<1) 0    (0)
Maryland 99    (3) 0    (0)
Massachusetts 67    (2) 0    (0)
Michigan 56    (2) 0    (0)
Minnesota 47    (1) 0    (0)
Mississippi 21    (1) 0    (0)
Missouri 27    (1) 0    (0)
Montana 7      (<1) 0    (0)
Nebraska 8      (<1) 0    (0)
Nevada 14    (<1) 0    (0)
New Hampshire 8      (<1) 0    (0)
New Jersey 117  (4) 0    (0)
New Mexico 6      (<1) 0    (0)
New York 715  (22) 0    (0)
North Carolina 61    (2) 0    (0)
North Dakota 1      (<1) 0    (0)
Ohio 41    (1) 0    (0)
Oklahoma 26    (1) 0    (0)
Oregon 27    (1) 0    (0)
Pennsylvania†† 106  (3) 0    (0)
Rhode Island 29    (1) 0    (0)
South Carolina 31    (1) 0    (0)
South Dakota 1      (<1) 0    (0)
Tennessee 49    (1) 0    (0)
Texas 195  (6) 0    (0)
Utah 12** (<1) 0    (0)
Vermont 7      (<1) 0    (0)
Virginia 81    (2) 0    (0)
Washington 34    (1) 0    (0)
West Virginia 11    (<1) 0    (0)
Wisconsin 31    (1) 0    (0)
Wyoming 2      (<1) 0    (0)
     
Territories Travel-associated cases*
No. (% of cases in territories)
(N=71)
Locally acquired cases†
No. (% of cases in territories)
(N=19,706)
American Samoa 0      (0) 46           (<1)
Puerto Rico 70    (99) 19,395*** (98)
US Virgin Islands 1      (1) 265          (1)
§Only includes cases meeting the probable or confirmed CSTE case definition and does not include asymptomatic infections unless the case is a pregnant woman with a complication of pregnancy
*Travelers returning from affected areas, their sexual contacts, or infants infected in utero
†Presumed local mosquito-borne transmission
††One additional case acquired through laboratory transmission
**Includes one case with unknown route of person-to-person transmission.
***The Puerto Rico Department of Health is retroactively reporting cases, resulting in larger than normal increases in cases in recent weeks.
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