I think many people would have heard the names of diseases, tuberculosis and Ma. Tuberculosis is a disease that is spread by contact with the patient during coughing, sneezing or even talking to come out by saliva or phlegm, and fine particles floating in the air for a long time. In particular, that the air force did not dump or not lit like a fresh market. Shopping malls and cinema in the air in the bus. When we breathe a tuberculosis infection removed would make the chance of infection. For this reason, it makes people think that will produce a vaccine prevented by vaccine, called BCG.
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