Drug-Resistant TB Spreads Easily

Ruzanna Harutyunyan's picture
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New research has found that drug-resistant strains of tuberculosis are just as likely to be transmitted between people as drug-sensitive TB, which could make drug-resistant forms of the disease highly prevalent in the next few decades.

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For the study, scientists used genetic data from previous studies to create a model of the way TB progresses.

Researchers found that the growth rate, known as "reproductive fitness," of drug-resistant TB is comparable to drug-sensitive TB.

The study also found that most resistance today is not a direct result of treatment failure but a result of transmission of the disease from initial treatment failure.

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