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A daily newsletter charting the future: From technology to the scientific breakthroughs changing our lives.

As the flu season shows signs of leveling off, a look back at how the flu vaccine came to be

This year’s flu season has been reported as one of the worst in nearly a decade. And that means the flu shot is everywhere, from doctor’s offices to drugstores. We take for granted that the flu vaccine is commonplace now…and that we don’t have to worry about diseases like smallpox anymore. But just two centuries ago, millions of people were dying of all kinds of brutal diseases – and it took massive scientific exploration to develop the vaccinations that eradicated them

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