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Distribution of tuberculosis (TB) nucleic acid amplification (NAA), acid-fast bacilli (AFB), and culture results. Stratified data include verified US cases from the National Tuberculosis Surveillance System that had completeness of reporting for all 3 laboratory tests: a reported positive or negative NAA test result, AFB smear microscopy result, and Mycobacterium tuberculosis complex culture result (N=35138 during 2011‒2017).
