Evidence of an association between BCG vaccination and reduced all-cause mortality in TB cases.
Weaker evidence of an association between BCG vaccination and reduced repeat TB episodes in TB cases.
Little evidence of an association with other TB outcomes.
3. Background: Bacillus Calmette–Guérin (BCG) is one of the most widely-used vaccines worldwide. BCG primarily reduces the progression from infection to disease, however, there is evidence that BCG may provide additional benefits.