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TB vaccine gets its groove back

TB VaccineA team of Vanderbilt University Medical Center investigators has cracked one of clinical medicine’s enduring mysteries – what happened to the tuberculosis vaccine. The once-effective vaccine no longer prevents the bacterial lung infection that kills more than 1.7 million people worldwide each year.

Their solution, reported in the journal PLoS ONE, could lead to an improved TB vaccine and also may offer a novel platform for vaccines against other pathogens.

“Our findings represent nearly a 180-degree reversal from the dogma of the last 60 years – that the TB vaccine stopped working because it became over-attenuated and was too ‘wimpy’ to be effective,” said Douglas Kernodle, M.D., associate professor of Medicine.

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