Which disease did Jenner target with the first successful vaccine?

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Multiple Choice

Which disease did Jenner target with the first successful vaccine?

Explanation:
The concept here is how vaccination began: using a related or milder infection to build protection against a more dangerous disease. Edward Jenner used material from cowpox lesions to immunize a person, and that individual later resisted smallpox when exposed to it. This demonstrated that exposure to a milder infection could confer immunity to a more severe one, leading to the first successful vaccine. The disease Jenner targeted with this breakthrough was smallpox. Polio, measles, and cholera vaccines were developed later as immunology advanced, not in Jenner’s time.

The concept here is how vaccination began: using a related or milder infection to build protection against a more dangerous disease. Edward Jenner used material from cowpox lesions to immunize a person, and that individual later resisted smallpox when exposed to it. This demonstrated that exposure to a milder infection could confer immunity to a more severe one, leading to the first successful vaccine. The disease Jenner targeted with this breakthrough was smallpox. Polio, measles, and cholera vaccines were developed later as immunology advanced, not in Jenner’s time.

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