You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Best method to find out cases of TB in a community is - and explain in detail?
Sputum smear examination by direct microscopy is now considered as the method of choice for case finding. The reliability, cheapness and ease of direct microscopic examination has made it number one case-finding method all over the world . It enables us to discover the epidemiologically most impoant cases of pulmonary tuberculosis , ie; those excreting tubercle bacilli in their sputum . Ref: PARK&;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition , Page :182