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Trends of drug resistance rates to first-line anti-TB drugs.
Notes: Trends of drug resistance rates for four first-line anti-TB drugs (rifampicin, isoniazid, streptomycin and ethambutol) and MDR-TB in new TB cases (A), previously treated TB cases (B) and total TB cases (C) at a major hospital in Guizhou Province of China during the study period 2008–2015.
Abbreviations: MDR, multidrug resistant; TB, tuberculosis.
