"Vaccines are the Ultimate Sacred Cow"

"Vaccines are the Ultimate Sacred Cow"
The term "vaccination" derives from the Latin word "vacca," meaning "cow."
In the 18th century, Edward Jenner observed that milkmaids who had contracted cowpox, a mild disease, were immune to the more severe smallpox. He used cowpox pus to inoculate people against smallpox, a procedure known as vaccination.
The term "vaccine" was coined from "vacca" to describe the material used in the inoculation.
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