On December 15, Zhong Nanshan, the winner of the " Medal of the Republic " and an academician of the Chinese Academy of Engineering, visited the "National College Anti-epidemic Lecture Hall" of Sun Yat-sen University, and brought a popular science lecture on "New Coronavirus (Omicron) Epidemic Dynamics and Response".
" Omickron pathogenicity is greatly weakened
mortality rate is close to influenza"
"Currently, the second wave of Omickron epidemic is encountered nationwide, characterized by its strong transmission." Zhong Nanshan believes that Omickron is constantly mutating, and its transmission is getting stronger and stronger, but its pathogenicity is greatly weakened. In the early stages, the infection sites were the upper respiratory tract, airway and lungs, but after two years of mutation, Omickron was mainly concentrated in the upper respiratory tract.
From the national trend, after Omickron's infection, the proportion of asymptomatic infections in increased significantly. In this regard, Zhong Nanshan said that he analyzed the epidemic situation in Guangzhou, Beijing, Chongqing, Zhengzhou and other cities in China since September this year, and believed that the mortality rate of the new crown epidemic is close to that of the flu.
The new coronavirus is "strong in the north and weak in the south"?
"No obvious difference"
In response to the recent social prevalence of the novel coronavirus "strong in the north, weak in the south", Zhong Nanshan said that Guangzhou, Chongqing and other places are mainly BA.5.2, Beijing, Baoding and other places are mainly BF.7, and BF.7 is a mutant strain based on BA.5.2. Overall, there is no obvious difference between the two strains. "Where are weaker and where are stronger, there is no basis for this, but this is found in individual cases."
"The proportion of reinfection in
after infection once
is very small."
Zhong Nanshan said that infection of Omickron (BA.4/5, BF.7) is not scary, and most of them can be fully recovered within 7-10 days. He also pointed out that many data currently show that after infection with Omickron once, the proportion of reinfection within a year is very small. He said that after infection with Omickron once, antibodies will be produced in the body, which is equivalent to getting the vaccine once.
"Asymptomatic infected people basically have no sequelae of the new crown."
talked about the issue of sequelae, Zhong Nanshan said that since the outbreak has only been three years since the outbreak, there is still a lot of debate about sequelae. Some clinical manifestations such as olfactory and taste disorders, joint/muscle pain, sleep disorders, fatigue/fatigue, etc., are gradually relieved in many cases, which may not be "sequelae". Studies show that the proportion of Omickron causes "sewages" than delta , and asymptomatic infections basically have no sequelae of the new crown. Patients who have been vaccinated before infection have a reduced risk of sequelae.
"The later the 'become positive' symptoms may be milder."
Zhong Nanshan said that in fact, infection with new crown is a natural law. People do not take the initiative to get sick, but because Omickron is very spreading, it is highly likely that they will be infected. However, the later the infection delays, the less likely you will have to experience hard-working symptoms after infection, and this will be the case over time. He said that prevention should be the main focus. "I believe that in the end, more and more infected people will be asymptomatic."
"The concept of being together is not advisable."
In response to the current saying "It is better to be together with the early and the late ones, it is better to be together with the sun", Zhong Nanshan said that this concept is not advisable. Because large-scale infection in a very short period of time will affect normal social order and easily lead to the emergence of new mutants. Zhong Nanshan strongly calls for accelerated vaccination of vaccines (especially xenotype vaccines). At the same time, he also emphasized that personal protection is still important, wearing a mask, washing hands frequently, ventilation frequently, and one-meter line.
People's Daily Comprehensive
Source: Guangxi Daily
