2019 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 November 7, 2019, a total of 98 chikungunya virus disease cases with illness onset in 2019 have been reported to ArboNET from 26 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.
  • A total of two chikungunya virus disease cases with illness onset in 2019 have been reported to ArboNET from U.S. territories (Table). To date, two locally acquired cases have been reported from Puerto Rico.

States reporting chikungunya virus disease cases – United States, 2019 (as of November 7, 2019)

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

Table. Chikungunya virus disease cases reported to ArboNET by state or territory — United States, 2019 (as of November 7, 2019)

 

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=98) (N=0)
Arizona 3 (3) 0 (0)
California 15 (15) 0 (0)
Colorado 1 (1) 0 (0)
Florida 3 (3) 0 (0)
Georgia 1 (1) 0 (0)
Hawaii 2 (2) 0 (0)
Illinois 6 (6) 0 (0)
Iowa 2 (2) 0 (0)
Maryland 1 (1) 0 (0)
Massachusetts 3 (3)  0 (0)
Missouri 1 (1) 0 (0)
Nebraska 1 (1) 0 (0)
New Jersey 8 (8) 0 (0)
New Mexico 2 (2) 0 (0)
New York 9 (9) 0 (0)
North Carolina 4 (4) 0 (0)
Ohio 10 (10) 0 (0)
Rhode Island 1 (1) 0 (0)
South Carolina 1 (1) 0 (0)
Tennessee 3 (3) 0 (0)
Texas 7 (7) 0 (0)
Utah 1 (1) 0 (0)
Virginia 6 (6) 0 (0)
Washington 4 (4) 0 (0)
Wisconsin 2 (2) 0 (0)
Wyoming 1 (1) 0 (0)
Territories (N=0) (N=2)
Puerto Rico 0 (0) 2 (100)