2020 Case Counts in the US
2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014
Provisional Data as of May 25, 2021
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 provisional data reported to ArboNET for 2020.
US States
- 29 chikungunya virus disease cases reported
- 28 cases in travelers returning from an affected area
- 0 cases acquired through presumed local mosquito-borne transmission
- 1 case acquired through laboratory transmission
US territories
- 0 chikungunya virus disease cases reported
- 0 cases in travelers returning from an affected area
- 0 cases acquired through presumed local mosquito-borne transmission
Chikungunya virus disease cases* reported to ArboNET by states and territories – United States, 2020 (as of May 25, 2021)
Chikungunya virus disease cases* reported to ArboNET — United States, 2020 (as of May 25, 2021)
| Travel-associated cases No. (%) |
Locally acquired cases No. (%) |
|
|---|---|---|
| State | (N=29) | (N=0) |
| California | 4 (14) | 0 (0) |
| Colorado | 1 (3) | 0 (0) |
| Idaho | 1 (3) | 0 (0) |
| Illinois | 2 (7) | 0 (0) |
| Iowa | 2 (7) | 0 (0) |
| Missouri | 1 (3) | 0 (0) |
| New Jersey | 3 (10) | 0 (0) |
| New York | 4† (14) | 0 (0) |
| North Carolina | 6 (21) | 0 (0) |
| South Carolina | 1 (3) | 0 (0) |
| Tennessee | 1 (3) | 0 (0) |
| Texas | 3 (10) | 0 (0) |
| Territories | (N=0) | (N=0) |
*Includes confirmed and probable disease cases
†Includes case acquired through laboratory exposure
Page last reviewed: May 25, 2021