Culture positivity for Mycobacterium tuberculosis, incremental yield and time to positivity in standard and supplemented MGIT cultures.

*Each specimen analysed independently.#Sequential specimens adding only new sputum-positive TB not identified in the previous sample(s).Table shows unadjusted yield data for the three specimens taken from each HIV-infected, smear-negative, presumptive TB case and grown in both standard and supplemented media. Abbreviations: TB = tuberculosis; MGIT = Mycobacterial Growth Inhibitor Tube; CI = confidence interval; NTM = non-tuberculous mycobacteria.Culture positivity for Mycobacterium tuberculosis, incremental yield and time to positivity in standard and supplemented MGIT cultures.