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Tuberculosis vaccine hopes dashed
http://www.bbc.co.uk/news/health-21302518
Tuberculosis is the leading cause of death among people with HIV in South Africa
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 major trial of a TB vaccine since Bacillus Calmette-Guerin (BCG) 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.
