ATLANTA, Dec. 12 (UPI) -- In 2011, 1,925 U.S. malaria cases were reported -- the highest since 1971 and a 48 percent increase from 2008, federal health officials found.
The Centers for Disease Control and Prevention's Morbidity and Mortality Weekly Report said the majority of malaria infections in the United States occurred among people who traveled to regions with malaria. Of the 1,925 malaria cases in 2011, only five were not classified as imported.