Published in TB and Outbreaks Week, February 13th, 1995
A possible explanation for the observed variation in the efficacy of BCG vaccine in preventing tuberculosis (TB) is that different BCG strains have been used in different studies.
"We recently performed a meta-analysis of BCG vaccination in the prevention of tuberculosis to obtain a more powerful estimate of overall efficacy and to explore the reasons for the divergent results reported in numerous studies conducted so far,"...
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