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Edward Jenner discovered a vaccination against ______ by infecting a boy with _____.

measles; smallpox
cowpox; smallpox
polio; cowpox
smallpox; cowpox

2 Answers

5 votes

The correct answer is the last option: smallpox; cowpox

answered
User James Crosswell
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8.7k points
3 votes
Edward Jenner discovered a vaccination against [smallpox] by infecting a boy with [cowpox]. He noticed that milkmaids who got cowpox never got smallpox and developed his theory from there. He is the father of the study of immunity and immunisation.
answered
User Bruie
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8.6k points
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