Question

What is vaccine and who discovered it?​

Answer 1

Answer:

Edward Jenner is considered the founder of vaccinology in the West in 1796, after he inoculated a 13 year-old-boy with vaccinia virus (cowpox), and demonstrated immunity to smallpox. In 1798, the first smallpox vaccine was developed.

Answer 2

TWO CENTURIES AGO, AN ENGLISH PHYSICIAN NAMED EDWARD JENNER DISCOVERED FIRST VACCINE FOR SMALL POX.

... JENNER TRIED TO DELIBERATELY GIVING COWPOX TO PEOPLE, AND FOUND THAT THEY ARE NOT RESISTANT TO SMALLPOX. THIS WAS BECAUSE THE SMALLPOX VIRUS IS CLOSELY RELATED TO THE COWPOX VIRUS.

.....COW IS 'VACCA' IN LATIN, AND COWPOX IS 'VACCINIA' .THIS WORD IS KNOWN AS VACCINE NOW.