title: Beijing/W genotype Mycobacterium tuberculosis and drug resistance.
abstract: Beijing/W genotype Mycobacterium tuberculosis is widespread, may be increasing, and may have a predilection for drug resistance. Individual-level data on >29,000 patients from 49 studies in 35 countries were combined to assess the Beijing genotype's prevalence worldwide, trends over time and with age, and associations with drug resistance. We found 4 patterns for Beijing/W genotype tuberculosis (TB): 1) endemic, not associated with drug resistance (high level in most of East Asia, lower level in parts of the United States); 2) epidemic, associated with drug resistance (high level in Cuba, the former Soviet Union, Vietnam, and South Africa, lower level in parts of Western Europe); 3) epidemic but drug sensitive (Malawi, Argentina); and 4) very low level or absent (parts of Europe, Africa). This study confirms that Beijing/W genotype TB is an emerging pathogen in several areas and a predominant endemic strain in others; it is frequently associated with drug resistance.
authors.affiliation: European Concerted Action on New Generation Genetic Markers and Techniques for the Epidemiology and Control of Tuberculosis RIVM, Bilthoven, the Netherlands.
mesh_terms: D000328:Adult; D000995:Antitubercular Agents / Q000627:therapeutic use*; D021821:Communicable Diseases, Emerging / Q000188:drug therapy / Q000453:epidemiology / Q000382:microbiology; D024901:Drug Resistance, Multiple, Bacterial; D005260:Female; D005838:Genotype; D014943:Global Health; D006801:Humans; D008297:Male; D008875:Middle Aged; D009169:Mycobacterium tuberculosis / Q000187:drug effects* / Q000235:genetics*; D015995:Prevalence; D014376:Tuberculosis / Q000188:drug therapy / Q000453:epidemiology* / Q000382:microbiology; D018088:Tuberculosis, Multidrug-Resistant / Q000188:drug therapy / Q000453:epidemiology* / Q000382:microbiology
chemical_list: D000995:Antitubercular Agents