A major trial of a new booster vaccine has ended in failure, marking a major setback in the fight against tuberculosis (TB).
It was the first big study in infants since the Bacillus Calmette-Guerin (BCG) vaccine was introduced in 1921.
BCG is only partially effective against the bacterium that causes TB, which is why several international teams are working on new vaccines.
The latest, known as MVA85A, failed to protect babies who had already had BCG — via redwolf.newsvine.com
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