Hi all! I would like to acknowledge all of you that active tuberculosis is not that danger..... Even you suffer from the tuberculosis, you could get ride of it, if you wold have taken medicine for one year. It is not like aids or cancer......It was danger that time when TB was not cure. BCG vaccine is given some undeveloped countries including Nepal. People from developing countries have not required to take BCG vaccine; in fact, their TB skin test (PPD.) result comes negative. In other words, BCG is kinda viccine contain TB virus, is given to people, so that people from developing country wouldn't worry form active TB people, coz they are reuired to do immunization, once people who had taken BCG need to do x-ray and find out what's going on..... (some of you know if you are public school/college student or green cardholder, ya are requested to do medical exam).