This 1966 microscope photo provided by the U.S. Centers for Disease Control and Prevention shows Mycobacterium tuberculosis bacilli, the organism responsible for causing the disease tuberculosis.
NEW YORK — The number of U.S. tuberculosis cases in 2023 were the highest in a decade, according to a new government report.
CDC officials expected TB numbers would rise, but the 2023 count “was a little more than was expected,” said Dr. Philip LoBue, director of the agency's Division of Tuberculosis Elimination. An estimated 85% of the people counted in 2023 were infected at least a year or two earlier and had what’s called latent TB, when the bacteria enters the body and hibernates in the lungs or other parts of the body. Experts estimate as many as 13 million Americans have latent TB and are not contagious.
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