Bambino che viene somministrato un vaccino da un medico, fine del XVIII secolo - Illustrazioni stock

Vintage engraving of a Child being given a Vaccine by a doctor, late 18th Century. French. Smallpox vaccine, the first successful vaccine to be developed, was introduced by Edward Jenner in 1796. He followed up his observation that milkmaids who had previously caught cowpox did not later catch smallpox by showing that inoculated cowpox protected against inoculated smallpox.