Just in the last two centuries, tuberculosis caused over a billion human deaths. One estimate, from Frank Ryan’s Tuberculosis: The Greatest Story Never Told, maintains that TB has killed around one in seven people who’ve ever lived. Covid-19 displaced tuberculosis as the world’s deadliest infectious disease from 2020 through 2022, but in 2023, TB regained the status it has held for most of what we know of human history. Killing 1,250,000 people, TB once again became our deadliest infection. What’s different now from 1804 or 1904 is that tuberculosis is curable, and has been since the
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