This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
The most appropriate test to assess the prevalence of TB infection in a community is 
Select and explain. 
A. Mass miniature radiography, B. Sputum examination, C. Tuberculin test, D. Clinical examination
C: Tuberculin test
Answer: C: Tuberculin test 
Explanation: Prevalence of tuberculosis is the percentage of individuals who show a positive reaction to the standard tuberculin test.Prevalence represents a cumulative experience of a population to recent and remote infection with Mycobacterium tuberculosis.limitations are high coverage of BCG vaccination. since most of the vaccinees become positive reactors to the tuberculin test and cross-sensitivity to atypical mycobacteriae.Park 23e pg: 172