Multi-drug resistant TB passed on less than drug-susceptible TB, study shows

A study published this week in PLOS Medicine has found that some strains of multi-drug resistant tuberculosis (MDR-TB) may have a lower fitness (be less capable of spreading) than drug-susceptible tuberculosis bacteria.

The study, conducted by Louis Grandjean of Imperial College London, and colleagues, compared new tuberculosis cases among household contacts of tuberculosis patients in South Lima and Callao, Peru to determine the relative fitness of MDR-TB versus drug-susceptible tuberculosis.

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