Prevalence of latent tuberculosis infection and predictive factors in an urban informal settlement in Johannesburg South Africa: a cross-sectional study

摘要

BackgroundSouth Africa has one of the highest burdens of latent tuberculosis infection (LTBI) in high-risk populations such as young children, adolescents, household contacts of TB cases, people living with HIV, gold miners and health care workers, but little is known about the burden of LTBI in its general population.