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Journal of Clinical Microbiology, 03 1997, 566-569, Vol 35, No. 3
EA Talbot, DL Williams and R Frothingham
The attenuated bacillus Calmette-Guerin (BCG) vaccine strain is derived
from a virulent strain of Mycobacterium bovis. BCG is difficult to
differentiate from other strains of M. bovis and other members of the M.
tuberculosis complex by conventional methods. Recently, a genomic region
designated RD1 was found to be present in all virulent M. bovis and M.
tuberculosis strains tested but deleted from all BCG strains tested. With
this information, a multiplex PCR method was developed to detect the RD1
deletion. A large collection of BCG and other M. tuberculosis complex
strains from diverse host and geographic origins was tested. RD1 was
deleted in 23 of 23 BCG strains. RD1 was present in 129 of 129 other M.
tuberculosis complex strains. This multiplex PCR method can be used as a
tool for the rapid and specific identification of BCG.
Copyright © 1997 by the American Society for Microbiology. All rights reserved.
PCR identification of Mycobacterium bovis BCG
Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA.
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