What did Jenner's discovery demonstrate?
Immunity through vaccination
Cure for all diseases
Genetic modification
Antibiotic resistance
Answer
Immunity through vaccination was demonstrated by Jenner's discovery. He observed that milkmaids who had been exposed to cowpox, a mild disease, were immune to smallpox, a deadly disease. This led him to hypothesize that exposure to a weakened form of a disease could protect against the disease itself. He tested this hypothesis by deliberately infecting a boy with cowpox and then exposing him to smallpox.
Edward Jenner: The Vaccine Visionary Quiz
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