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Jenner took material from a cowpox sore on milkmaid Sarah Nelmes' hand and inoculated it into the arm of James Phipps, the 9-year-old son of Jenner's gardener. Months later, Jenner exposed Phipps several times to variola virus, but Phipps never developed smallpox.

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In 1770, he moved to St. George's Hospital in London to finish his medical education under the great surgeon and experimenter John Hunter.

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Jenner presented his theory on the origin of cowpox as a horse disease transmitted to cows in the first part. During Jenner's lifetime, the theory was debunked. He then advanced the theory that cowpox infection protects against subsequent smallpox infection.

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-He is called the father of immunology
-After his death, more vaccines were made
-Discovered the smallpox vaccine
-He was born into a large family
-His work bankrupted him(He gave out free vaccinations)

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Edward Jenner was born on May 17, 1749, in Berkeley, Gloucestershire. Edward Jenner died during the early morning hours of Sunday, January 26, 1823. He was the eighth of nine children. Edward Jenner was a well-known physician and scientist whose name is engraved in medical history.

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Edward Jenner discovers in 1796 that vaccination with the cowpox virus protects against smallpox infection and develops a smallpox vaccine. In 1798, he publishes his findings.