276 years ago today, May 17, 1749 (April 2, 1749, the lunar calendar), the founder of cowpox vaccination, was born. Chenner When mankind finally eliminated the terrible infectious disease of smallpox, we can't help but miss Chenner, the founder of the cowpox vaccination method and the great British doctor. On May 17, 1749, Edward Chenner was born into a pastoral family in the Berkeley pastoral area of Gloucestershire, England. When he was 5 years old, his father, who was a priest, passed away and he lived with his brother, Stephen Chenner, who was a priest. Jinna is strong and strong, has a gentle nature, has a wide range of interests, and especially likes nature. He was an excellent student at school and also collected specimens of various animals and plants. During Chenner's youth, the terrible plague of smallpox was spreading throughout Europe and was also spread to the Americas by explorers, explorers, and colonists. Almost everyone in the UK is infected with the disease, leaving unsightly scars on the faces or bodies of adults. Thousands of people have become blind or insane due to their severe illness, and more people die every year. Jenner witnessed this disaster brought to mankind and made up his wish to become a doctor in the future to cure this disease from the age of 13. With the help of his brother, Jenner learned medical skills from surgeon Ludlow for seven years. At the age of 20, he was already a capable assistant surgeon. In medical practice, Zener was inspired by the discovery that ranch milkers who contracted cowpox in cows with cowpox did not contract smallpox. After more than 20 years of exploration and research, one morning in May 1796, he used a clean lancet to make several cuts on the arms of an 8-year-old child named Jamie and vaccinated him with cowpox paste. Facts proved to be a correct and effective way to prevent smallpox, and cowpox vaccines were produced. The success of cowpox vaccination has created a broad field for immunology. Chenna has won great praise internationally. In the summer of 1799, people praised him as a great scientific inventor and life-saver. Napoleon once called Jenner a great man. All modern vaccination methods actually stem from Jenner's first great discovery. On January 26, 1829, the great doctor Jenner stopped beating in his Berkeley residence.