Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to page options Skip directly to site content

2017 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 January 9, 2018, a total of 114 chikungunya virus disease cases with illness onset in 2017 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 36 chikungunya virus disease cases with illness onset in 2017 have been reported to ArboNET from U.S. territories (Table). To date, 36 locally acquired cases have been reported from Puerto Rico.

States reporting chikungunya virus disease cases – United States, 2017 (as of January 9, 2018)

Map of the United States showing states reporting travel-associated chikungunya virus disease cases, including, Alaska, California, Colorado, Florida, Georgia, Hawaii, Illinois, Iowa, Kansas, Louisiana, Maine, Maryland, Massachusetts, Michigan, Nebraska, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Texas, Virginia, Washington, and Wisconsin

Table. Laboratory-confirmed chikungunya virus disease cases reported to ArboNET by state or territory — United States, 2017 (as of January 9, 2018)

Laboratory-confirmed chikungunya virus disease cases reported to ArboNET by state or territory — United States, 2017 (as of January 9, 2018)
Travel-associated cases
No. (%)
Locally-transmitted cases
No. (%)
State  (N=114) (N=0)
Alabama 1 (1) 0 (0)
Alaska 1 (1) 0 (0)
California 26 (23) 0 (0)
Colorado 2 (2) 0 (0)
Delaware 1 (1) 0 (0)
Florida 4 (4) 0 (0)
Georgia 2 (2) 0 (0)
Hawaii 2 (2) 0 (0)
Illinois 4 (4) 0 (0)
Iowa 1 (1) 0 (0)
Kansas 1 (1) 0 (0)
Louisiana 1 (1) 0 (0)
Maine 1 (1) 0 (0)
Maryland 2 (2) 0 (0)
Massachusetts 3 (3) 0 (0)
Michigan 3 (3) 0 (0)
Nebraska 3 (3) 0 (0)
New Jersey 10 (9) 0 (0)
New York 15 (13) 0 (0)
North Carolina 2 (2) 0 (0)
Ohio 4 (4) 0 (0)
Pennsylvania 1 (1) 0 (0)
Texas 13 (11) 0 (0)
Virginia 4 (4) 0 (0)
Washington 3 (3) 0 (0)
Wisconsin 4 (4) 0 (0)
Territories (N=0) (N=36)
Puerto Rico 0 (0) 36 (100)
TOP