2020 provisional data for the United States

  • 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.
  • As of August 6, 2020, a total of 11 chikungunya virus disease cases with illness onset in 2020 have been reported to ArboNET from 7 U.S. states (Table & Map). All reported cases occurred in travelers returning from affected areas. No locally-transmitted cases have been reported from U.S. states.
  • No chikungunya virus disease cases with illness onset in 2020 have been reported to ArboNET from U.S. territories.

States reporting chikungunya virus disease cases – United States, 2020 (as of August 6, 2020)

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

Table. Laboratory-confirmed chikungunya virus disease cases reported to ArboNET by state or territory — United States, 2020 (as of August 6, 2020)

 

Laboratory-confirmed chikungunya virus disease cases reported to ArboNET by state or territory — United States
Travel-associated cases
No. (%)
Locally-transmitted cases
No. (%)
State  (N=11) (N=0)
California 3 (27) 0 (0)
Illinois 1 (9) 0 (0)
Missouri 1 (9) 0 (0)
North Carolina 2 (18) 0 (0)
South Carolina 1 (9) 0 (0)
Tennessee 1 (9) 0 (0)
Texas 2 (18) 0 (0)