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Objectives To determine the levels of resistance to first‐line tuberculosis drugs in three cities in three geopolitical zones in Nigeria.
Methods A total of 527 smear‐positive sputum samples from Abuja, Ibadan and Nnewi were cultured on BACTEC‐ MGIT 960. Drug susceptibility tests (DST) for streptomycin, isoniazid, rifampicin and ethambutol were performed on 428 culture‐positive samples on BACTEC‐MGIT960...