2019 Case Counts in the US
2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014
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

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