英文高手請進 !!!翻譯有二十點喔 :)
Based on his observations, Jenner came up with a theory.
He believed that cowpox not only protected against smallpox,
but could be passed from one human being to another as a deliberate means of protection.
In May 1796, Jenner finally got the chance to test his theory.
He learned that a young woman from a local farm, Sarah Nelmes, had cowpox.
Jenner asked the parents of an eight-year-old boy named James Phopps for permission to conduct a risky experiment on their son.
Jenner chose James because he had never had cowpox or smallpox.
Jenner removed pus from Sarah's hand and spread it on scratches he had made on the boy's arms.
As expected, the boy developed a mild case of cowpox, but recovered rapidly.
Jenner was now ready for the second, much riskier stage of his experiment.
On July 1, 1796, Jenner variolated Phipps with pus from a smallpox patient.
Jenner and other scientists and physicians waited anxiously for the results.
Some were excited about Jenner's experiment, but many others accused him of taking too great a risk.
In fact, Jame Phipps never developed smallpox.
This was clear evidence to support Jenner's theory, but more data were needed.