2019 Case Counts in the US

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Final data reported to ArboNET

Chikungunya virus disease became a nationally notifiable condition in 2015. Cases are reported to CDC by state and local health departments using standard case definitions. This webpage contains final data reported to ArboNET for 2019.

US States

  • 192 chikungunya virus disease cases reported
    • 192 cases in travelers returning from affected areas
    • 0 cases acquired through presumed local mosquito-borne transmission

US Territories

  • 2 chikungunya virus disease cases reported
    • 0 cases in travelers returning from affected areas
    • 2 cases acquired through presumed local mosquito-borne transmission

Chikungunya virus disease cases* reported to ArboNET by states and territories – United States, 2019

Map of the United States showing states reporting travel-associated chikungunya virus disease cases. See data table below.

Chikungunya virus disease cases* reported to ArboNET— United States, 2019

 

Laboratory-confirmed chikungunya virus disease cases reported to ArboNET by state or territory — United States
Travel-associated cases
No. (%)		 Locally-transmitted cases
No. (%)
States  (N=192) (N=0)
Arizona 4 (2) 0 (0)
California 35 (18) 0 (0)
Colorado 2 (1) 0 (0)
Florida 6 (3) 0 (0)
Georgia 1 (1) 0 (0)
Hawaii 2 (1) 0 (0)
Illinois 10 (5) 0 (0)
Iowa 2 (1) 0 (0)
Kentucky 1 (1) 0 (0)
Maryland 1 (1) 0 (0)
Massachusetts 5 (3)  0 (0)
Michigan 1 (1) 0 (0)
Minnesota 18 (19) 0 (0)
Missouri 1 (1) 0 (0)
Montana 1 (1) 0 (0)
Nebraska 1 (1) 0 (0)
Nevada 1 (1) 0 (0)
New Jersey 15 (8) 0 (0)
New Mexico 2 (1) 0 (0)
New York 15 (8) 0 (0)
North Carolina 8 (4) 0 (0)
Ohio 14 (7) 0 (0)
Pennsylvania 1 (1) 0 (0)
Rhode Island 1 (1) 0 (0)
South Carolina 2 (1) 0 (0)
Tennessee 3 (2) 0 (0)
Texas 19 (10) 0 (0)
Utah 1 (1) 0 (0)
Vermont 1 (1) 0 (0)
Virginia 10 (5) 0 (0)
Washington 4 (2) 0 (0)
Wisconsin 3 (2) 0 (0)
Wyoming 1 (1) 0 (0)
Territories (N=0) (N=2)
Puerto Rico 0 (0) 2 (100)

*Includes confirmed and probable cases

Page last reviewed: December 2, 2020
Content source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Vector-Borne Diseases (DVBD)