Edward Jenner’s Vaccination

The transcript describes an investigation into the belief that cowpox provides immunity against smallpox. Local farmers and milkmaids believed that having cowpox prevented smallpox. An experiment was conducted by inoculating an 8-year-old boy, James Phipps, with cowpox pus. Afterward, he was exposed to smallpox but did not contract the disease, suggesting cowpox could prevent smallpox.

What was the local farmers' belief regarding cowpox and smallpox?

• Cowpox and smallpox were the same disease.

• Smallpox could be cured by cowpox.

• Cowpox provided immunity against smallpox.

• Cowpox was more dangerous than smallpox.

Who was the subject of the experiment involving cowpox pus?

• A dairy maid

• An 8-year-old boy

• A local farmer

• A scientist

What was the initial reaction of the boy after being inoculated with cowpox?

• He showed no symptoms at all.

• He had a slight headache and was restless.

• He immediately caught smallpox.

• He developed a severe fever.

What was the outcome when the boy was later exposed to smallpox?

• He developed a mild form of smallpox.

• He showed no signs of the disease.

• He needed further inoculations.

• He became severely ill.

What did the repeated procedure several months later confirm?

• The experiment needed to be redone.

• The cowpox inoculation was ineffective.

• The boy was still susceptible to smallpox.

• The boy remained immune to smallpox.