Another winter, COVID-19 cases began to appear in some places, which made people panic. But we must believe that the country and the government have controlled the epidemic at the beginning of this year, which is enough to prove China's execution. As ordinary people, as long as they take protective measures, wear masks and don't go to crowded places, COVID-19 is not so terrible. So far, tens of millions of people around the world have been infected, which is very amazing. COVID-19 reminds many people of the Spanish flu of the last century. Tens of millions died. How did it finally disappear?

The Spanish epidemic did not first appear in Spain, but in a military camp in Kansas, USA. Because Spain was the first country to declare the flu, it was called Spanish flu. The mortality rate of this infectious disease is about 2.5% to 5%, which is much higher than 0. 1% of general influenza. Spanish influenza is mainly divided into three stages of transmission.

The first transmission stage was in the spring of 19 18, which happened to be the season of frequent influenza. On March 4th, some soldiers in Kansas Barracks had symptoms of headache, muscle aches and high fever, which were similar to those of the common flu, and were ignored. Influenza infected 500 million people because it happened during the First World War. The US military brought the flu to the battlefield, and other countries began to have the flu. Influenza has appeared in China, French, Spanish and other countries, but most of them are not serious.

The second transmission stage was in the autumn of 19 18, which was also the highest mortality period. The virus may have mutated during the transmission. In August, more than 70% of the crew of a British ship were infected with the flu, and 7% of them died. In addition, a similar situation has occurred in other ships, and the death rate has risen sharply. In September, influenza began to spread widely in Europe and the United States. The main group of patients is young adults, with a high mortality rate. The patient's symptoms are headache, high fever, hemoptysis and blue face. Influenza can cause other complications that lead to death, the most common of which is pneumonia. From June+10 in 5438, 200,000 people died in the United States alone. In order to control the epidemic, many cities have ordered people to go to public places, and dance halls and cinemas have been closed. The Spanish flu ravaged the world, and the population of all countries was affected, so World War I was forced to end early.

The third spreading stage is from the winter of 19 19 to the spring of 1920. The flu spread further, and people in some tribal villages all disappeared and became uninhabited villages. The highest mortality rate is in Samoa, up to 25%. At that time, the only place in the world where there was no report of infection was Malajo Island at the mouth of the Amazon River, and no other countries and regions were spared. In the end, the Spanish epidemic killed about 50 million people.

1in the spring of 920, the Spanish epidemic that raged all over the world for 18 months suddenly disappeared mysteriously. As for why it suddenly disappeared, the academic community has not yet reached an exact conclusion. Experts speculate that it may be because the weather gets warmer, the survival rate of the virus decreases and gradually disappears. It is also possible that antibodies have appeared in the human body, and the virus has been unable to cause harm to human beings. It is also possible that after the end of World War I, countries will conduct quarantine in all directions to prevent new sources of infection and the virus will not spread.

Since the Spanish epidemic can be controlled, I believe that COVID-19 will be controlled and eventually disappear. Before that, every citizen should not take it lightly and take protective measures to prevent the state and the government from adding chaos!