NPR

The TB That Afflicts Much Of The World Was Likely Spread By Europeans

A new study looks at how tuberculosis has traveled the world — and the lessons that can be learned about treatment of drug-resistant forms.

Conquistadors and missionaries didn't just bring colonialism and Western religion to other parts of the world. They likely brought TB, too.

That's a key finding of an international study published this week in Science Advances, which looks at how the most common strain of tuberculosis developed – and how antibiotic resistance, a serious issue in fighting tuberculosis, has spread as well.

Tuberculosis (TB) is one of the world's most serious health issues. It is the deadliest infectious disease, claiming 1.6 million lives a year, and one of the top ten causes of death worldwide.

In recent years, scientists have offered two prominent narratives

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