Bacillus Calmette-Guerin is a live attenuated vaccine primarily used against tuberculosis and prepared from a strain of Mycobacterium bovis. The term denotes the combination of the two researchers’ surnames (Calmette and Guerin) and the ancestral Bacillus genus. In medical and microbiology contexts, it refers to the vaccine itself, not a disease. The pronunciation emphasizes the three multi-syllabic components in sequence.
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