The Great Masquerader: Tuberculosis Presenting as Community-Acquired Pneumonia

Area of Science:

• Infectious Diseases
• Pulmonology
• Global Health

Background:

• Tuberculosis (TB) and lower respiratory tract infections (LRTIs) are leading global causes of death.
• Combined, TB and community-acquired pneumonia (CAP) rank as the third leading cause of death worldwide.
• While Streptococcus pneumoniae is the most common cause of CAP globally, Mycobacterium tuberculosis is a significant, often underestimated, cause in regions like sub-Saharan Africa, Asia, and South America.

Purpose of the Study:

• To review the epidemiology, immunopathogenesis, clinical presentation, diagnosis, management, prognosis, and prevention of TB CAP.
• To highlight the importance of TB as a cause of CAP in specific global settings.
• To discuss the utility of newer diagnostic approaches for TB CAP.

Main Methods:

• Literature review focusing on TB CAP.
• Synthesis of data on epidemiology, clinical aspects, and diagnostics.
• Discussion of management and prevention strategies.

Main Results:

• TB is a frequent cause of CAP in certain regions, with up to one-third of cases attributable to Mycobacterium tuberculosis.
• TB remains a critical clinical issue in intensive care units in affected areas.
• Limited data exist on TB CAP, underscoring the need for further research and awareness.

Conclusions:

• TB CAP is a significant public health concern in many parts of the world.
• Comprehensive understanding and improved diagnostic tools are crucial for effective management.
• Further research is needed to address the knowledge gaps in TB CAP.