Since September, 29 provinces have reported new local cases.

08.09.2022

Number of this text: 1600, reading time for about 3 minutes

Guide: The implementation time of the National Day holiday and before and after is from September 10, 2022 to October 31, 2022.

Author | First Financial Wu Siyi

"For the variation of the new crown virus, we often pay more attention to the impact of the ability to spread, pathogenic ability, and immune escape ability. At the same time, we also see that not every so -called evolution branch or mutation will significantly affect the above three capabilities above capabilities. Change. "

Dong Xiaoping, chief expert of the China Centers for Disease Control and Prevention, made the above statements at a press conference held by the State Council ’s joint prevention and control mechanism on science and accuracy of the prevention and control of epidemic conditions on the 8th.

Since the emergence of Omikon variants in November last year, five major evolutionary branches have been formed worldwide. At present, BA.5 has become the main popular strain in the world, with stronger communication capabilities and faster communication. Some studies have shown that their basic regeneration (R0) may reach 18.6.

Recently, many new subspecies of Omikon BA.5 have also appeared in many places.

In Shenzhen in the southern city, since August 23, most of the strains infected by most positive cases in the local area are Omikon BF.15 mutant strains (sub -branches of BA.5.2.1); Since the 27th, the city has been detected for the first time, BA.5.2 and BA.5.2.3 (the sub -branch branch of the BA.5 evolution branch). According to Wang Yan, deputy director of the Harbin Center for Disease Control and Prevention, there are two major communication features of the sub -branches of the two types of BA.5 evolution branches mentioned above. In other cities in China; second, the average incubation period of the Harbin epidemic is 2-4 days, the shortest is 1.5 days, and the longest 1 case is more than 5 days.

However, Dong Xiaoping believes that after the entire observation, Omikon mutant strains are three aspects: dissemination capacity, pathogenic ability, and immune escape ability. Although each branch is a bit different, the overall difference is not much.

He explained that first of all, the variation of the RNA virus genome is a very common natural phenomenon. Some variations occur during the copy of the human body. These mutations are often random. The new coronal virus belongs to the RNA virus. Its genome consists of nearly 30,000 nucleotides. During each replication process, there may be a mutation of several or several nucleotides. This is a very natural phenomenon; on the other hand The immune barrier for the formation of large -scale vaccines in the world in a short time and the formation of a large number of natural infection people will also accelerate the mutation of new coronary viruses.

It is precisely because "not every so -called Omeck Rong's evolution branch or mutation will significantly affect the ability of the virus to spread, pathogenic and immune escape". Strategy and development of drugs and vaccines are very important and important.

At present, the national epidemic occurs in part of the time, and some provinces in some provinces are still developing. According to the latest data from the National Health and Health Commission, since September, 29 provinces across the country have reported new local infections, and community communication and epidemic overflow in some regions have not been completely blocked, and the situation of preventing and control is severe and complicated.

Coinciding with the Mid -Autumn Festival and National Day holidays, the movement of personnel across provinces will be more frequent. How should the current epidemic prevention and control policy be adjusted?

Wu Liang, deputy director of the National Health and Health Commission's Disease Control Bureau, said that in order to ensure that there is no local scale epidemic in the Mid -Autumn Festival and before and after National Day, the impact of the maximum reduction on production and life will allow the people to spend a healthy, peaceful and peaceful holiday. The National Health and Health Commission has strengthened and optimized a series of prevention and control policies and measures on the basis of comprehensively implementing the ninth edition prevention and control plan.

Wu Liangyou suggested that during the Mid -Autumn Festival and National Day, it was advocated to spend the holidays in the National Day holidays in the National Day holidays; if you travel, passengers need to hold 48 hours of kernel to detect negative proofs of aircraft, high -speed rail, train, cross -provincial long -distance passenger cars, cross -provincial passenger transportation Transportation such as ships.

After arriving at the destination, across provincial mobile personnel may also need to be "launched". Wu Liang said that in accordance with the work deployment of the joint control mechanism of the State Council, it was decided to provide a nucleic acid testing service immediately after the National Day holiday and around the provincial mobile personnel arrived at the local area. The principle of "landscape inspections" across the country.

Up to now, Beijing, Nanjing, Ningbo, Zhoushan, Yunnan and other provinces and cities have proposed the initiative of "local holidays". Some cities have upgraded prevention and control measures. According to the two sessions released by Zhoushan today, the provincial -to -boat returning personnel should report to the community (village), accommodation hotels, units, etc. in the community (village), accommodation hotels, etc. in advance. Complete a "landing inspection" and advocate three days and three inspections.

According to Wu Liangyou, the implementation time of the National Day holiday and before and after is from September 10, 2022 to October 31st. "Follow -up, we will further optimize and improve relevant measures according to the epidemic situation and prevention and control needs."

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