Bacillus Calmette-Guerin (BCG) vaccines help to prevent tuberculosis (TB), especially in areas where the disease is endemic (widespread). It can also be used for other therapeutic or medical purposes.
Tuberculosis (TB) is an infectious disease caused by the bacteria known as Mycobacterium tuberculosis. It is spread from one person to another through droplets released into the air, through coughing or sneezing.
Common symptoms of TB include cough lasting three weeks or longer, coughing out blood, feeling tired, fever, night sweats and unexplained or unintentional weight loss.
