After seeing an average of 28 imported chikungunya cases a year in the United States during the past eight years, primarily from travel to Asia, the Centers for Disease Control and Prevention (CDC) puts the number of such cases to over 2,000 as of Dec. 16.
Beginning in 2014, cases were identified in travelers returning from the Caribbean. As of December 16, a total of 2,021 chikungunya virus disease cases have been reported to ArboNET from U.S. states. Eleven locally-transmitted cases have been reported from Florida.
New York has seen the most travel associated chikungunya with 533 case, or 27 percent of the national total. This is followed by Florida with 384, New Jersey with 160 and Massachusetts with 124 cases. Only Alaska, Wyoming , North Dakota and Montana have not reported a single case.
Last week, we saw the number of local transmission cases in the Western Hemisphere eclipse the 1 million case mark, one year after the the first cases were reported in the Caribbean.