002 SARS virus broke out in Guangdong, my country, and soon spread to Southeast Asia and even the world. People around the world were ready to fight the epidemic, but in the summer of 2003, the SARS virus suddenly disappeared and no one knew where it went. Because of this, when the new crown broke out in 2020, many people thought that the epidemic would end next summer, but they did not expect that the epidemic lasted for more than two years. Why is the new crown so much "lasting" than SARS?
On November 16, 2002, a person named Pang Zuoyao in Foshan, Guangdong developed headache and fever. After emergency treatment by Foshan Shiwan Hospital, he was transferred to the Infectious Disease Department of Foshan First People's Hospital. At that time, people only thought it was an ordinary infectious disease, but they did not realize that it was a SARS virus infection that was terrified later.
Pang Zuoyao's illness only kicked off the SARS. What really brought this disease into the public eye is Poison King Huang Xingchu .
On December 5, 2002, Huang Xingchu felt unwell and went to a nearby clinic for a medical treatment. He didn't get better after taking the medicine. He went to the hospital for an injection, but he never relieved his symptoms. On the evening of December 16, the painful Huang Xingchu was rushed to Heyuan People's Hospital , and then transferred to the Guangzhou Military Region General Hospital. After a month, Huang Xingchu was cured, but the nine medical staff treated were all infected with SARS. He was nicknamed the King of Poison and was criticized.
Then, the SARS virus began to spread on a large scale. At that time, there were rumors that drinking isatis root and smoked white vinegar can cure strange diseases. So much so that a bottle of white vinegar costs 10 yuan per bottle was sold for 100 yuan, and a pack of isatis root was sold for 30 to 40 yuan. Even so, there is still no market price.
After March 15, 2003, the SARS virus spread to Europe, North America, Australia and other regions. People officially named this virus and made complete preparations for the fight against the epidemic. However, by May html, the SARS viruses around the world suddenly decreased sharply, and SARS viruses were officially declared to end in July. People around the world are curious where the SARS virus, which has not yet been found for solutions, has gone?
Some people say that the SARS virus has found a way to live in harmony with humans. Since it will no longer fight against people's immune systems, it naturally disappears; some people say that it is summer, and high temperatures kill the virus, and the SARS virus that cannot withstand the high temperature environment has a typical "seasonality". Both speculations of
have some truth, but it cannot be ignored that health organizations around the world have implemented effective isolation measures after they noticed the SARS outbreak, which is also a major reason for the extinction of this virus.
So why has the new crown, which is also a deadly virus, been able to survive the summer for more than two years?
In response to this point, scientists have summarized the following 4 reasons:
first, the new coronavirus is more cunning than the SARS virus. After
is infected with SARS, the symptoms are still very obvious. Not only will there be high fever and cough in a short period of time, but the spreading ability is not that strong; but the new coronavirus is different. Not only does the incubation period be longer, many patients have no obvious symptoms, but their spreading ability is also very strong.
Second, the new coronavirus has stronger survivability.
Research shows that SARS virus will soon inactivate in high temperature environments, but the suitable temperature and range for the new coronavirus to survive are relatively wide, with strong environmental adaptability and is not easily killed by high temperatures, so it can still rage after summer comes.
Third, the new coronavirus has epidemic characteristics.
SARS virus is very violent when it breaks out. Although it causes great trouble to people in a short period of time, it comes quickly and goes quickly. However, the new coronavirus has epidemic characteristics. Although it is not fierce, it continues to produce mutant strains and is difficult to eradicate.
Fourth, we lack sufficient understanding of the new coronavirus.
So far, people have not been able to study the source of the new coronavirus and the intermediate host, and cannot eliminate the problem from the root. Although people have developed many vaccines in a targeted manner, since the new coronavirus itself is constantly mutating, there is still a long way to go to completely destroy it.
Will the new coronavirus disappear in such a short period of time?
Academician Zhong Nanshan once answered this question. He believes that although we have achieved certain results recently, we have a certain understanding of the transmission laws, latent time and outbreak symptoms of the new coronavirus, and have successfully controlled the large-scale transmission of the virus, it is unlikely to completely eliminate the new coronavirus in the short term.
If you want to completely eliminate the threat of the new coronavirus, the best way is to establish a herd immunity barrier, which means that the vaccination rate of the people must reach more than 80% . my country has done a good job in epidemic prevention. At present, about 1.1 billion people have been vaccinated, and there is still hope to achieve this. As for other countries abroad, it is more difficult.
In general, although the new crown epidemic is not as fierce as it was at the beginning, everyone should still do a good job in epidemic prevention in their daily lives. keep in mind the four principles of washing hands frequently, wearing masks, ventilation more, and paying attention to personal hygiene. We believe that with our joint efforts, we can overcome the difficulties soon.
