title: Frequency of drug-resistant mycobacteria.
mesh_terms: D002648:Child; D004352:Drug Resistance, Microbial; D005006:Ethnicity; D006801:Humans; D009169:Mycobacterium tuberculosis / Q000187:drug effects*; D014376:Tuberculosis / Q000188:drug therapy / Q000453:epidemiology*; D014481:United States