Research News

Multidrug resistant TB is less transmissible than drug susceptible strains, study shows

BMJ 2015; 350 doi: https://doi.org/10.1136/bmj.h3367 (Published 24 June 2015) Cite this as: BMJ 2015;350:h3367
  1. Susan Mayor
  1. 1London

Multidrug resistant tuberculosis (TB) is only about half as transmissible as drug susceptible TB among household contacts, a study has found, suggesting that the fitness of the resistant TB strain is less than those that respond to drug treatment1 and providing encouraging new information on the chances of containing its spread.

The fitness of Mycobacterium tuberculosis—defined as its ability to reproduce, be transmitted, and cause disease in another person—is …

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