The day we knew would come is finally here. The first locally acquired case of the tropical disease chikungunya was reported in the U.S. today.
The mosquito-borne viral disease first debuted in the Western Hemisphere last year and has since sprawled across the Caribbean, with cases in Puerto Rico and U.S. Virgin Islands. The first U.S.-infected patient is a man in Florida who had not recently traveled outside the country, according to the Centers for Disease Control and Prevention. So far this year, 243 cases have occurred in the U.S. but all of those stemmed from travelers returning from other countries where the virus is thriving.
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