BCG vaccination can prevent severe forms of tuberculosis in children but its protective efficacy wanes over time, Minister of State for Health Bharati Pravin Pawar informed the Lok Sabha on Friday.바카라 웹사이트The risk of tuberculosis even after vaccination if exposed to the bacteria remains at all ages. However, the infection breaks down to disease if the immunity of the individual is compromised due to various conditions, Pawar said in a written reply in the Lok Sabha.