Tuberculosis: current trends in diagnosis and treatment

Area of Science:

• Public Health
• Infectious Diseases
• Microbiology

Background:

• Tuberculosis (TB) is a significant global communicable disease, ranking as the second leading cause of death worldwide.
• Approximately one-third of the global population is infected with TB, with a 10% progression rate to active disease, predominantly in less-developed countries.
• TB incidence is rising in Africa, largely due to the co-occurrence of HIV infection.

Purpose of the Study:

• To review the current landscape of tuberculosis diagnosis and treatment.
• To highlight challenges in TB management, particularly in special circumstances and drug-resistant cases.
• To emphasize the importance of effective treatment strategies and diagnostic tools.

Main Methods:

• Review of established diagnostic methods for Mycobacterium tuberculosis, including culture and sputum smear microscopy.
• Discussion of current treatment protocols, emphasizing the Directly Observed Treatment, Short-course (DOTS) strategy.
• Exploration of emerging molecular diagnostic techniques.

Main Results:

• Culture remains the gold standard for definitive TB diagnosis, while sputum smear microscopy is a crucial rapid tool.
• Standard multi-drug treatment regimens of 6 months or more achieve cure rates exceeding 95%.
• The DOTS strategy, considered the standard of care, is underutilized, with only one-third of global cases treated effectively.

Conclusions:

• Effective treatment modalities exist for TB, but require adaptation for special populations (e.g., pregnant women, those with liver/renal issues, HIV/AIDS co-infection) and drug-resistant strains.
• There is a need to enhance the global implementation of the DOTS strategy.
• Continued development of rapid molecular diagnostic techniques is essential for timely intervention.