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Illustrative values for typical proportions of tuberculosis (TB) infection and disease of HIV-infected patients entering antiretroviral therapy (ART) care in scenarios with low, medium and high TB force of infection. Values of infected proportions are calculated for a cohort with mean age 33 years resident in communities with mean annual risk of TB infection (ARTI) of 0.04%, 0.4% and 4%. (TB disease data from: Lawn SD, Fraenzel A, Kranzer K, et al. [35]).
