Chikungunya virus in the United States. Before 2006, chikungunya virus disease was rarely identified in U.S. travelers. During 2006‒2013, studies identified an average of 28 people per year in the United States with positive tests for recent chikungunya virus infection (range 5‒65 per year).

Metrics Abstract Chikungunya virus is widespread throughout the tropics, where it causes recurrent outbreaks of chikungunya fever. In recent years, outbreaks have afflicted populations in.