<prompt> The most appropriate test to asssess the prevalence of tuberculosis infection in a community is -Mass miniature radiotheraphySputum examinationTuberculin testClinical examination  <response>: Tuberculin test is the ;only way of estimating the prevalence of infection in a population. Positive reaction to the test : evidence of past or present infection by M.tuberculosis. Reference:Park;s textbook of preventive and social medicine,K.Park,23rd edition,page no:185-186. p 