Tuberculosis remains one of the most consequential infectious disease challenges of our era, and at a moment when global health funding is contracting, understanding exactly where progress has stalled — and where it has succeeded — may determine whether the WHO's ambitious 2035 elimination targets are achievable or merely aspirational. This GBD 2023 analysis provides what is arguably the most granular and methodologically rigorous multi-decade accounting of TB burden yet attempted.
Drawing on vital registration records, surveillance systems, verbal autopsies, and minimally invasive tissue sampling across 204 countries and territories from 1990 through 2023, the study separately quantified TB incidence, prevalence, and mortality stratified by HIV co-infection status and drug-resistance profile. The dual-platform methodology — Cause of Death Ensemble modelling for mortality and DisMod-MR 2.1 for morbidity — allowed simultaneous estimation across age and sex subgroups. Disability-adjusted life-years were computed as the composite of years of life lost and years lived with disability, while a comparative risk assessment framework isolated the population-attributable fractions of alcohol use, smoking, and elevated fasting plasma glucose as modifiable upstream drivers of TB burden globally.
This analysis arrives at a critical inflection point. The WHO End TB Strategy requires a 95% reduction in TB deaths and a 90% drop in incidence between 2015 and 2035 — benchmarks that were already under strain before recent reductions in global health aid began constraining national TB programs. The GBD framework has historically identified gaps that WHO-only models miss, particularly in countries with weak vital registration. MDR-TB and HIV-associated TB represent compounded burdens where single-intervention strategies consistently underperform. The inclusion of metabolic and behavioral risk factors is analytically significant: it positions TB not solely as an infectious disease problem but as one intertwined with non-communicable disease epidemiology. For a health-conscious readership, the implication is structural — TB's persistence reflects systemic vulnerabilities, not just pathogen biology. This is a confirmatory-yet-escalating study that should recalibrate resource-allocation discussions globally.