Eliminating human tuberculosis in the twenty-first century

Area of Science:

• Public Health
• Infectious Diseases
• Mathematical Modeling

Background:

• Tuberculosis (TB) remains the leading cause of death from a curable infection globally.
• Ambitious targets, including TB elimination by 2050 (incidence <1 per million), have been set by the international health community.
• Current national TB control programs focus on finding and curing active TB cases.

Purpose of the Study:

• To evaluate the effectiveness of various control strategies in achieving the 2050 TB elimination target.
• To determine if current treatment regimens are sufficient for elimination.
• To explore the impact of novel diagnostics, drugs, and vaccines on TB control.

Main Methods:

• Utilized mathematical modeling to simulate TB transmission and control.
• Assessed the impact of combining different interventions: diagnostics, drugs, and vaccines.
• Analyzed the synergy between treatments for latent and active TB infection.

Main Results:

• While current drug regimens can cure most active TB patients, they are insufficient alone to meet the 2050 elimination goal.
• A combination of diagnostics, drugs, and vaccines targeting both latent and active TB significantly increases the likelihood of achieving the 2050 target.
• Synergistic effects were observed when coupling control methods for latent and active disease.

Conclusions:

• Achieving the global TB elimination target by 2050 necessitates a comprehensive approach beyond treating active disease.
• The integration of diagnostics, drugs, and vaccines for both latent and active TB is essential for success.
• Synergistic effects highlight the importance and cost-effectiveness of treating latent TB infection and the potential impact of new TB vaccines.