Fewer U.S. residents were diagnosed with tuberculosis last year than the year before — down from 9,094 to 9,029, the fewest new cases ever reported, according to the Centers for Disease Control and Prevention. Still, the goal of eliminating TB in the United States is unlikely to become a reality in the 21st century, the CDC says. It attributes that in large part to data showing that the incidence of TB — defined as the number of cases per 100,000 people — is now declining at a slower pace, down 1.3 percent from 2017 to 2018, compared with a 4.7 percent annual decline from 2010 to 2014. Last year, the incidences of TB was found to be highest in Alaska and lowest in Wyoming. The CDC said that “as has been the case for over two decades,” four states — California, Florida, New York and Texas — accounted for about half of the reported cases of TB in 2018.