there is a vaccine for tuberculosis disease called bacille calmette-guerin (bcg). it is used in some countries to prevent severe forms of tb in children. however bcg is not generally recommended in the united states because it has limited effectiveness for preventing tb in adults. the effect of bcg against extensively drug-resistant tuberculosis (xdr) would likely be similar to the effect on drug-susceptible tb.
can the tb vaccine (bacille calmette-guerin) help prevent extensively drug-resistant (xdr) tuberculosis?