Edward Jenner discovered vaccinations. He found that some of the dairymaids who worked with cows had suffered lesions on their hands, and that these dairymaids were immune to the more severe smallpox. Then, he inoculated James Phipps with material from the lesions on a dairymaids’ hands. Which best explains why Jenner decided to infect Phipps?

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Answer:

option 3- They were exposed to cowpox, and the substance their body produced to fight cowpox also attacked smallpox.

Explanation:

Jenner decided to infect Phipps with the innocuous from the handmaids in order for him to produce antibodies and boost his immunity.

What is vaccination?

Vaccination is the process of giving vaccines to individuals in order to boost their immunity against infections and diseases.

During vaccination, weakened infectious cells are introduced to to the body for the body to produce antibodies against it.

Therefore, Jenner decided to infect Phipps with the inoculum from the handmaids in order for him to produce antibodies and boost his immunity.

Learn more about vaccination at: https://brainly.com/question/2620291

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