THE FIRST PODCAST  Once upon a time there was a country doctor with a love of birds, a milkmaid with translucent skin, an eight-year-old boy with no idea what he’s in for and a wonderful cow that holds the secret to human immunity.
This is the story of the first vaccine, perhaps one of the greatest inventions in modern human history. Come listen to this remarkable story of risk and bravery which led to the eradication of one of the deadliest diseases in human history.
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06Â THEÂ COW AND THE COUNTRY BOY (THE FIRST VACCINE)
