China's release 丨 Whether the new coronal virus will be mutated and whether the current vaccine is still effective official response

China Net, July 21st. On July 21, the State Council's joint prevention and control mechanism held a press conference on the relevant situation of the prevention and control of the epidemic. On the 20th, a total of 3.41.46 million doses of the new crown vaccine in the country, the total number of vaccinations reached 1.2981 million, and 1.264.385 million were completed. %And 89.68%. The immunization vaccination was 77.346 million, of which 43.434 million were enhanced. Complete immunization vaccination of 174.773 million people.

The number of elderly people over the age of 60 covered 23.6169 million people, and the number of vaccinations was 223.11 million.

He Qinghua said that the next step will continue to guide localities to do a good job of new crown virus vaccines to strengthen immunity and elderly vaccination.

The national epidemic is generally in a low level of volatility

He Qinghua introduced that since July, the national epidemic is generally in a low level of volatility. Recently, a few regional epidemic conditions have rebounded, showing a multi -point extension and frequent trend. The number of local infections on a single day has increased. In the past week, the epidemic affected 78 cities in 21 provinces, of which more than 100 infected people reported in 7 provinces. The epidemic situation in Lanzhou, Guangxi, and Henan in Gansu is still in progress, and the risk of spreading society is greater.

"Overall, since July, after the local epidemic has been effectively controlled in a short period of time, the epidemic affects the response capacity and efficiency of the epidemic situation in a short period of time.

He Qinghua also pointed out that the global epidemic has rebounded, the flow of domestic personnel has increased, the risks of local epidemics have increased, and the national epidemic prevention and control situation is still severe and complicated. All localities should continue to strictly follow the relevant requirements of the new crown pneumonia prevention and control plan (ninth edition), adhere to the principles of science, accuracy, and efficient prevention and control, implement various measures for external prevention input, and continuously improve the normalization prevention and control situation The sensitivity of epidemic monitoring. After the epidemic occurs, the measures must be resolute and decisive, insist on fast -moving, and strive to control the epidemic in the minimum range in the shortest time, and resolutely prevent the occurrence of a large -scale epidemic.

my country's existing epidemic prevention and control measures can effectively respond to BA.4 and BA.5 sub -branches

According to Mi Feng, a spokesman for the National Health and Health Commission and deputy director of the Propaganda Department, at present, the global epidemic is still at a high level, and the number of new and confirmed cases has exceeded 1 million times. Popular plants, China's foreign defense input pressure continues to increase.

Talking about whether the existing prevention and control measures can effectively respond to the branches of BA.4 and BA.5 Asian branches of Omikon. The power has been strengthened, but it still belongs to the Omeck Rong mutant strains. Without evidence, the existing NPI (non -drug intervention) measures will fail, and my country's existing prevention and control measures can still be effective.

According to reports, the pathogenic force of BA.4 and BA.5 Asia branches is generally similar to other Omikon mutant strains, but the spread is slightly increased compared to other Omikon variants. The higher renewal index has become a popular superior strain in some countries and regions. In addition, the rapid spread of BA.4 and BA.5 Asian branches has already appeared in the elderly, and severe cases have occurred, and the recent hospitalization rates and ICU usage rates in 12 countries in Europe have increased. Research on epidemiological mathematics models show that the infection rate and mortality rate caused by branches of BA.4 and BA.5 Asia will increase.

Omikon mutant strains will not be the last mutant strain

According to reports, the variation of virus mutations, especially the RNA virus is the basic characteristic of the virus survival. When the virus host (crowd) produces a certain group of group immunity to a certain group of strains through natural infection and vaccination Some breakthroughs of the existing immune barrier, so as to reproduce, this is one of the reasons why many viral infectious diseases often show increased periodic incidence.

"The new crown virus is a" clever ',' cunning 'virus, and multiple mutant strains have appeared in just 2 and a half years, forming a number of popular peaks. "Dong Xiaoping said that most scholars believe that the new crown virus variation will be mutated by the new crown virus will be the will be the new crown virus will be mutated will For a long time, Omikon's mutant strains should not be the last mutant strain. Therefore, the monitoring of new mutant strains will have a long -term focus on the impact of communication, pathogenicity, and immune escape.

The current vaccine, especially in vaccination, is still the most effective prevention measure

Talking about whether the existing vaccine is still effective for Omikon's mutant strains, Dong Xiaoping said that since the occurrence of the new crown epidemic, it has been actively promoting the development and use of the vaccine. When Alpha, Delta mutant strains have been planned to plan related research, and have obtained important scientific materials. After the emergence of Omikon's mutant strains, multiple teams and multiple R & D channels have carried out corresponding work and made progress, but the large -scale clinical (phase III) research takes time. More importantly, whether it is necessary to replace the existing vaccination types, doses, strategies, etc. to replace the existing vaccination with new mutant plants, it also requires scientific assessment. Dong Xiaoping pointed out that a large number of international and domestic real world studies have confirmed that the currently approved vaccine, no matter which type, is in hospital, pneumonia, intensive/critical illness caused by the Omikon variants (BA.1, BA.2) Death has a good protection effect, and strengthening vaccination can effectively improve the protection efficiency of vaccine.

"Although some in vitro studies at home and abroad have found that BA.4 and BA.5 have obvious immune escape phenomena, the neutralization of in vitro virus is reduced, but there is no specific data whether the effectiveness of the real world's vaccine protection has been significantly reduced. Delta mutation strains and Omircong mutations (BA.1, BA.2) also presented neutralization in vitro research, but in the real world, it still shows good hospitalization, intensive/critical illnesses and protection of death. Capability, so domestic and foreign experts believe that the current vaccination of the current vaccine is still effective. For the elderly and the vaccination of the people with basic diseases, the vaccination of the enhanced needle is still the most effective prevention measure. "Dong Xiaoping said.

For the public individual, Dong Xiaoping said that on the one hand, it is important to focus on the intensive transmission power and severe cases caused by large -scale outbreaks. It is very important to discover and effectively control in time. On the other hand, existing vaccines and non -drug prevention and control measures are still very effective, and the pathogenic force has not changed significantly, so there is no need to over -interpret and panic.

"The public must do their best to complete the basic vaccine and strengthen vaccination, especially the elderly and patients with basic diseases to avoid serious clinical consequences. In addition, we must insist on conventional personal protection." Dong Xiaoping said.

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