From Dr. Ueli Zellweger we have received the following explanation of how BCG vaccination - the live attenuated strain of Mycobacterium bovis known as Bacillus Calmette-Guérin (BCG) - works. Defra are keen to use this in hotspot areas (where badgers are
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Read the complete post at http://bovinetb.blogspot.com/2010/02/bcg-how-it-works.html