2014 final data for the United States

•In 2014, chikungunya was not a nationally notifiable disease in the United States. However, chikungunya cases could be reported to ArboNET, the national surveillance system for arthropod-borne diseases. These are final 2014 data reported to ArboNET for chikungunya virus disease.
•In 2014, a total of 2,811 chikungunya virus disease cases were reported to ArboNET from U.S. states for 2014 (Table 1 & Map). Twelve locally-transmitted cases were reported from Florida. All other cases occurred in travelers returning from affected areas.
•A total of 4,710 chikungunya virus disease cases were reported to ArboNET from U.S. territories for 2014 (Table 2). Of these, 4,659 were locally-transmitted cases reported from Puerto Rico, the U.S. Virgin Islands, and American Samoa. The remaining 51 cases occurred in travelers returning from other affected areas.
Table 1. Laboratory-confirmed chikungunya virus disease cases reported to ArboNET by state— United States, 2014 [PDF – 1 page]
Table 2. Laboratory-confirmed chikungunya virus disease cases reported to ArboNET by territory — United States, 2014 [PDF – 1 page]

States reporting chikungunya virus disease cases – United States, 2014