1947年5月17日,爱德华·琴纳出生于英国的格洛斯特,他的父亲是一位牧师。琴纳长大以后,立志学医。于是,他13岁那年,父亲就把他送到留德洛夫医师那里当学生。琴纳勤奋地学习工作着,几年后,他获得了医学士的称号,回到了自己的故乡,并开设了一家医院。当时天花是人类疾病中最可怕的一种。天花患者的死亡率达百分之十,而幸存者也大都变成了麻子,对于天花,人们谈虎色变。为了战胜可怕的天花,琴纳经常冥思苦想,以致常常夜不能寐。偶然之中琴纳注意到, May 17, 1947, Edward Jenner was born in Gloucester, England, his father is a pastor. Jenner grew up, determined to study medicine. Thus, at the age of thirteen, his father sent him to Dr. Ryover as a student. Jenner diligently studied and worked for a few years, he was awarded the title of medical bachelor, returned to his hometown, and opened a hospital. Smallpox was the most horrible thing in human disease at the time. In the case of smallpox patients, the death rate is 10%, and most of the survivors become pockmarks. As for the smallpox, people talk about change. In order to overcome the terrible smallpox, Jenner often meditation, so often sleepless nights. By chance, Jenner noticed,