What does plague mean? Explain.

Interpretation of the meaning of plague: (name) Epidemic serious infectious diseases, such as smallpox, cholera, plague, etc.

Mankind has suffered countless plagues, some of which are particularly serious and have a great impact on future generations: plague, smallpox, flu, cholera, malaria and so on. Generally speaking, plague is an infectious disease caused by some highly pathogenic substances, such as bacteria and viruses. It is generally caused by poor sanitary conditions after natural disasters.

Plague has long been recorded in China historical materials. For example, "Zhou Li Tianguan Notes" records: "People's diseases are raised by diseases, and they are always sick." "Lu Chunqiu Ji Chun Ji" records: "Ji Chun is prosperous in Xia Zhishi, and the people are ill." It shows that the knowledge of plague has reached a certain level at that time, and it is believed that plague can occur all year round. One of the reasons is that the seasonal qi is abnormal, which is caused by "untimely qi"

The earliest extant ancient Chinese medicine book Huangdi Neijing is also recorded. For example, "Su Wen Acupuncture Theory" points out: "All five epidemics are easy to be infected, regardless of size, with similar symptoms ..., healthy qi is hidden inside, and evil cannot be done, so avoid its toxic gas." Su Wen's Instinctive Disease: "Jueyin does not abdicate, that is, the wind rises early, the rain does not fall, the wet order does not melt, and the people are ill, so we should abandon it.

Wind causes diseases, and people's diseases are all joint pain in limbs, headache, accumulated heat and internal annoyance, and dry throat leading to drinking. It is pointed out that plague is contagious and epidemic, and its clinical manifestations are similar, which is related to the climate. It is believed that as long as "healthy qi exists inside", it can "avoid its poisonous gas".