Re: Edward Jenner, the inventor of vaccination.
I strongly suggest looking up Variolation in 15th century China before bragging too much about which country invented vaccination.
It's a well known fact that absolutely everything was invented in China before we even knew we needed it.
But the important difference between variolation and vaccination is Blossom the cow. Even in backward old Europe it was known that inoculation - a mild dose of smallpox - provided future immunity. The problem was ensuring that the dose was mild enough not to kill or disfigure the patient. Jenner recognised that cowpox, apparently a fairly benign infection endemic among milkmaids, provided immunity to smallpox.