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2018 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 13, 2018, a total of 76 chikungunya virus disease cases with illness onset in 2018 have been reported to ArboNET from 22 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 four chikungunya virus disease cases with illness onset in 2018 have been reported to ArboNET from U.S. territories (Table). To date, four locally acquired cases have been reported from Puerto Rico.

States reporting chikungunya virus disease cases – United States, 2018 (as of November 13, 2018)

Map of the United States showing states reporting travel-associated chikungunya virus disease cases, including California, Delaware, Florida, Georgia, Illinois, Kentucky, Louisiana, Maine, Maryland, Minnesota, Missouri, New Jersey, New York, North Carolina, Ohio, Oregon, Pennsylvania, South Carolina, Texas, Utah, Virginia, and Washington

Table. Chikungunya virus disease cases reported to ArboNET by state or territory — United States, 2018 (as of November 13, 2018)

 

Laboratory-confirmed chikungunya virus disease cases reported to ArboNET by state or territory — United States, 2017 (as of November 13, 2018)
Travel-associated cases
No. (%)
Locally-transmitted cases
No. (%)
State  (N=76) (N=0)
California 20 (26) 0 (0)
Delaware 1 (1) 0 (0)
Florida 3 (4) 0 (0)
Georgia 1 (1) 0 (0)
Illinois 7 (9) 0 (0)
Kentucky 1 (1) 0 (0)
Louisiana 1 (1) 0 (0)
Maine 1 (1) 0 (0)
Maryland 2 (3) 0 (0)
Minnesota 1 (1) 0 (0)
Missouri 2 (3) 0 (0)
New Jersey 9 (12) 0 (0)
New York 10 (13) 0 (0)
North Carolina 2 (3) 0 (0)
Ohio 1 (1) 0 (0)
Oregon 1 (1) 0 (0)
Pennsylvania 1 (1) 0 (0)
South Carolina 1 (1) 0 (0)
Texas 7 (9) 0 (0)
Utah 1 (1) 0 (0)
Virginia 2 (3) 0 (0)
Washington 1 (1) 0 (0)
Territories (N=0) (N=4)
Puerto Rico 0 (0) 4 (100)
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