According to relevant historical records, there are many large-scale plagues in history, which poses a great threat to human survival. The reason why plagues become terrifying is that most plagues will spread and may even affect a city or country.

According to relevant historical records, there are many large-scale plagues in history, which poses a great threat to human survival. The reason why plagues become terrifying is that most plagues will spread and may even affect a city or country.

The living environment in ancient times was backward. The epidemic would spread after the outbreak, but due to inconvenient transportation, it would spread longer. Therefore, some people would form herd immunity to after being infected with the virus.

However, the types of plagues are different and the characteristics are different, so there are also differences in the attack objects. Some plagues may occur in the elderly, while some plagues like to attack children.

01

The old saying goes, "The epidemic is not three, and there will be disaster after three." What does it mean? Is there any scientific basis?

The older generation has also summarized many experiences and sayings in the process of survival, such as: "There is no three major epidemics, and there will be disasters after three." In fact, this means that no matter how big the epidemic is, the epidemic will not last more than three years, and it will basically end within three years, otherwise human beings will suffer.

In the past society, humans also experienced many epidemics and suffered painful torture during the epidemic, so they finally concluded that "there will be disaster after three things".

The "three" here mainly has two meanings. On the one hand, it means a long duration, such as three years, and on the other hand, it means a large number of times, such as three consecutive times.

Although there have been many plagues in history, few of them have been more than three years. Therefore, some people predict that the new crown epidemic may end within three years, but the new crown epidemic is different from the previous epidemic. Moreover, this common saying has no clear source, but it is just passed down by the older generation and lacks scientific basis.

, especially now, the spread of the new crown epidemic is gradually declining, mainly because people's awareness of prevention and control is constantly improving, and the new crown epidemic is constantly changing. Therefore, fighting the new crown epidemic is a protracted war, and this sentence is not suitable for the new crown epidemic.

02

Where did the plague come from?

Nowadays, people divide plagues into plagues transmitted by humans and plagues transmitted by animals. Of course, there are also cases where animals are infected with diseases and then transmitted to humans.

For example, plague is a general term for some infectious diseases. Generally, there are no signs when it appears. However, due to the transmission of highly pathogenic microorganisms, especially when microorganism finds its host, it will spread rapidly.

will first infect people around the host of , and then reproduce, and eventually mass diseases will appear. In ancient times, plagues usually occurred after natural disasters and man-made disasters. For example, a heavy rain or earthquake occurred in a certain area, and plagues will usually occur after the disaster is over.

For example, during the Yan Emperor period, the Henan Plain encountered a flood due to Yellow River . After the flood, a great plague occurred, causing countless casualties and injuries.

03

1 In the current epidemic situation, how to improve immunity ?

Frequent sunbathing

Frequent sunbathing can promote the synthesis of vitamin D, which can prevent throat pain, common cold and rhinitis , especially those who are less sunbathing will be prone to skin diseases, and also cause physical weakness, weak legs, cramps, etc. due to the lack of calcium.

Drink more water

Pay more attention to replenishing water in normal times, and can improve immunity . Drinking more water can speed up metabolism , help the body clean up garbage and toxins, and keep the nasal and oral mucosa moist. After water enters the human body, it can enhance the vitality of lactate dehydrogenase in the organs, and can enhance immunity .

insist on exercise

Through exercise, it can wash away bacteria in the lungs, making the circulation of white blood cells faster, which can improve the immune system's ability to detect diseases. During the exercise, the body's muscle mass can also be increased to maintain nutritional status. You can exercise 5 times a week, and the exercise time will be maintained at about 30 to 60 minutes.