How did the word 'Vaccination' come into our usage?
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The word "vaccine" was created by Edward Jenner. The word comes from the Latin word vacca, meaning cow. A virus that mainly affects cows (Cowpox) was used in the first scientific demonstration that giving a person one virus could protect against a related and more dangerous one
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Vaccines definition
The body’s immune system helps protect against pathogens that cause infection. Most of the time, it’s an efficient system. It either keeps microorganisms out or tracks them down and gets rid of them.
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