Why is the TB vaccination called the BCG?
What is Bacille Calmette-Guérin (BCG)? BCG is a vaccine for TB disease. BCG is used in many countries, but it is not generally recommended in the United States. BCG vaccination does not completely prevent people from getting TB. It may also cause a false positive tuberculin skin test. However, persons who have been vaccinated with BCG can be given a tuberculin skin test or QuantiFERON-TB test.