The day of a successful vaccination – level 2
Smallpox was a very dangerous disease which killed millions of people. Cowpox was a less dangerous disease.
Edward Jenner was a doctor. He observed that milkmaids who caught cowpox, seemed to be immune to smallpox.
On May 14, 1796, Jenner took material from cowpox on the hand of a milkmaid and injected it into the arm of an 8-year-old boy.
After that the boy had a fever, but he did not get seriously ill. He also became immune to smallpox.
The success of Jenner’s vaccine led to the use of vaccination as a means of preventing smallpox.
The term “vaccine” comes from the Latin word for cow, “vacca,” because Jenner used cowpox to create the smallpox vaccine.
What other diseases have been successfully prevented with vaccines?
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