National population-based tuberculosis prevalence survey in Ghana, 2013.

Area of Science:

• Epidemiology
• Public Health
• Infectious Diseases

Background:

• Tuberculosis (TB) disease prevalence is a key indicator for assessing TB burden and control impact.
• Accurate prevalence data is crucial for effective public health interventions.
• Previous estimates may not fully capture the true scope of TB in Ghana.

Purpose of the Study:

• To estimate the current prevalence of TB disease among adults in Ghana.
• To provide updated epidemiological data for TB control strategies.

Main Methods:

• A nationally representative cross-sectional survey was employed.
• Screening involved interviews and chest X-rays (CXR).
• Sputum microscopy and culture were used for bacteriologic confirmation in symptomatic individuals.

Main Results:

• Smear-positive TB prevalence was 111 per 100,000 population.
• Bacteriologically confirmed TB prevalence was 356 per 100,000 population.
• Higher prevalence was observed in males and older adults; many cases were smear-negative with abnormal CXRs but no chronic cough.

Conclusions:

• The actual TB disease burden in Ghana is significantly higher than previously estimated.
• Increased efforts and resources are required to identify undiagnosed and unreported TB cases.
• Current screening and diagnostic approaches may need revision due to the high proportion of smear-negative and asymptomatic cases.