Wu Youxing was an infectious disease expert in the late Ming and early Qing Dynasties. What contribution did he make?

Wu Youxing's greatest contribution is to study plague. He wrote On Epidemic Fever, and he was the first person to study infectious diseases in China. Wu Youxing, the word can be, yes, it is the hero Wu Youke in the TV series "Daming Robbery". During the Chongzhen period, the plague broke out in the whole country for a long time, with a wide geographical span and a very high mortality rate, basically ten households and nine deaths. It never rains but it pours. Li Zicheng, the conqueror at that time, was eyeing Daming. In the Ming Dynasty, people were worried about domestic troubles and foreign invasion. The whole country was in a panic.

At that time, doctors didn't know how to treat the plague, so they could only treat it as typhoid or evil wind. But after all, the medicine didn't suit the symptoms, which not only failed to delay the patient's illness, but aggravated it. Doctors could only watch the epidemic getting worse. Wu Youxing, who experienced the plague and treatment, decided to change his mind and devote himself to research to find a solution.

Wu Youxing suggested that this disease should be called? Epidemics? The cause is not evil wind, cold, summer dampness, nor the evil of six evils, but another kind of qi between heaven and earth, the so-called four-season unhealthy qi, which enters from people's nose and mouth and causes people's diseases. Wu Youxing recorded this kind of epidemic diseases in Treatise on Epidemic Febrile Diseases, such as acute infectious diseases such as big head plague, melon pulp plague, malaria and dysentery, and then he classified them one by one according to the specific causes of these infectious diseases and prescribed prescriptions. Wu Youxing's prescriptions, such as Dayuan Decoction and San Xiao Decoction, are effective in treating some infectious diseases. He also put forward the theory of eliminating pathogenic factors and reaching the essence to assist the treatment, all of which have very good therapeutic effects. However, Wu Youxing's ending is not so perfect. 1644, Qing soldiers entered the customs. In order to consolidate the Manchu dynasty's rule over the customs area, the court promulgated? Shaving order? Wu Youxing was executed for refusing to shave his head, and his wife and children threw themselves into the lake. Only one book has been handed down, which is about febrile diseases.