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Kevin Elwood, MD

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Macrophage engulfing tuberculosis bacteri
BCCDC / October 2011

The finding of acid-fast bacilli in a sputum specimen rightly raises concern for pulmonary tuberculosis. The reality is that most positive smears will grow atypical or nontuberculous mycobacteria (NTM), ubiquitous... Read More

Letters / December 2009

I thank Dr Porzecanski for pointing out an inconsistency in my article.  The 1950s marked the time when immigration patterns began to change in Canada. There was a post-war surge in the number of immigrants... Read More

BCCDC / January/February 2004

Preventive options for tuberculosis (TB) consist of treatment of latent tuberculous infection (LTBI) or immunization with Bacille Calmette-Guèrin (BCG). BCG vaccine is an attenuated strain of Mycobacterium bovis... Read More