And the winner is the....Edward Jenner .
When he was a boy a Doctor infected him with Smallpox (no animal testing then apparently
)
They did this by making a cut and placing an infected scab in the wound. Yuk .
He was one of the lucky ones, he survived.
Later becoming a doctor, he searched for a smallpox cure.
While travelling he met a farm girl who told him she had contracted the non-lethal cowpox , therefore she would not catch smallpox.
Jenner got a healthy boy, infected him with cowpox . When he recovered he infected him with smallpox. Tadah. The ' old wives tale' proved correct.
The word vaccination comes from the Latin vacca, meaning cow.
Smallpox is the only disease in human history to be completely wiped out.
It is estimated Jenner saved more than 30 million lives.
Over to you HB