Tuberculosis (TB) prevention is essential for reaching the End TB targets in the South-East Asia Region (SEAR) of World Health Organization (WHO)1. The targets of 80% reduction in TB incidence rate and 90% reduction in TB mortality by 2030 (compared to 2015 levels) can be achieved only with additional interventions aimed at preventing TB, according to epidemiological modelling studies commissioned by the WHO South-East Asia Regional Office (WHO SEARO). Optimal implementation of TB preventive treatment (TPT) is a critical intervention to accelerate reduction in TB burden in the SEA Region, which bears nearly 43% of the global TB burden. TPT by itself has the potential to reduce the overall annual TB incidence rates by 8.3% (95% CrI 6.5–10.8) relative to 2015.