Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas · Sean Carroll

Thomas Levenson on the Mutual History of Humans and Germs

April 21, 2025·1 hr 32 min·5 clips
Thomas Levenson explains why every old-timey disease except smallpox is still lurking and killing people worldwide.
Sean Carroll interviews Thomas Levenson about the history of germ theory, from Leeuwenhoek's discovery of microbes to Pasteur's breakthroughs, exploring why it took centuries to accept that germs cause disease. They discuss historical figures like Cotton Mather and Semmelweis, highlighting societal resistance and lessons for modern public health challenges.

As heard by us

A clear history of how inoculation and vaccination were distinguished across cultures.

The episode follows Thomas Levenson as he traces smallpox inoculation across Africa, the Near East, Western Europe, and the Americas, while Sean Carroll uses the conversation to draw a clean line between inoculation and vaccination.

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Why you'd press play

Follow the early history of smallpox inoculation across Africa, Turkey, and colonial New England.

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