Then the doctor

Then the doctor And after all they, looking after cows daily, meet the cattle having cow smallpox.

Then the doctor imparted to people contents of bubbles of cow smallpox and proved that at the imparted immunity to natural smallpox is developed.

The material taken from bubbles of cow smallpox was called a vaccine from the Latin word vaccina in translation: cow.

It is a lot of years later, according to the offer of the Moon of Pasteur, all preparations warning diseases began to call vaccines.

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