Mycobacterium bovis: Possible Person-to-Person Airborne Transmission

medscape btb

A recent article from the U.S. Centers for Disease Control and Prevention (CDC), published in the Morbidity and Mortality Weekly Report (MMWR), describes the results of an intensive contact tracing program initiated after it was suspected that a Nebraska man, who had pulmonary tuberculosis attributable to Mycobacterium bovis, had acted as the primary focus for person-to-person transmission to other susceptible people, through airborne routes.


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Drug Resistance in Non-Tuberculous Mycobacteria

bronchocentric granulomatosis

A recent article in the Journal of Infection looks retrospectively at 13 years’ worth of clinical samples to identify pulmonary diseases caused by non-tuberculosis mycobacteria and to estimate what proportion of them were resistant to commonly used antimicrobials. Image credit: Martha L. Warnock, University of California, San Francisco. This image depicts a bronchiole that is almost completely occluded by granulomatous inflammation. Two small lumens remain (arrows). This lesion is frequent in non-tuberculous mycobacterial infections in the non-immunocompromised, where it may be associated with bronchiectasis. (Image credit)


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