A large amount of data shows that the new crown vaccine is already working in this round of epidemic
According to recent media reports, as of now, 53 severe and critical cases of new coronary pneumonia in Yangzhou, Jiangsu have been cleared, and all patients have received the best treatment.
The delta virus that caused this round of the epidemic is coming so fiercely. Many people have found that my country has received more than 2 billion doses of the new crown vaccine, but there are still severe and critically ill patients.
So, how effective can vaccines play in the battle against the new coronavirus?
On August 27, the State Council’s Joint Prevention and Control Mechanism held a press conference. The official disclosure of a large amount of data on the new crown vaccine, including the performance of the new crown vaccine in the latest round of the epidemic.
None of the critically ill patients has completed vaccination
"The critically ill patients in Yangzhou have not been vaccinated." Zheng Zhongwei, the leader of the vaccine research team of the Joint Prevention and Control Mechanism Research Team of the State Council, and the director of the National Health and Health Commission's Medical Science and Technology Development Research Center, said that among the severe cases , More than 95% are people who have not been vaccinated or have not completed the immunization program.
The performance of the vaccine in this round of the epidemic is consistent with the research results of the team of Academician Zhong Nanshan on the Guangdong epidemic.
Relevant research results show that after two doses of vaccination, the protective effect for moderate disease is 70%, and the protective effect for severe disease reaches 100%.
In Beijing, compared with the last new outbreak, under the premise of the same prevention and control measures, more than 300 people were infected by the epidemic last year, and the number of cases this time is far smaller than last year.
Zheng Zhongwei said that this is because the vaccination rate of people over 18 years old in Beijing has reached 94.5%.
Whether it is Nanjing, Yangzhou, Zhengzhou, or Guangzhou and Beijing, the detailed statistics of the epidemic give the same proof.
"Vaccination has a clear effect." Zheng Zhongwei said.
Global data is also here, the protection is worthy of "counting"
In response to a reporter from Science and Technology Daily on whether the effectiveness of China's new crown vaccine has been verified in overseas regions, the vaccine research and development class of the scientific research group also provided detailed data.
Zheng Zhongwei introduced that so far, we have provided more than 800 million doses of vaccines to the world, especially developing countries, and many countries have also carried out large-scale vaccination.
According to reports, since May, Peru, Thailand, Chile, Argentina, Mongolia, Bahrain, Uruguay, Sri Lanka and other countries that have been vaccinated with my country's new crown inactivated vaccine have successively released real-world research data.
As the prevention and control strategies of different countries are different, the epidemic situation of variant strains is also different, and the data is different.
In general, the protection rate against infection ranges from 57% to 85%, the protection rate against severe illness is around 90%, and the protection rate against death is between 84% and 97%.
It can be said that the Chinese new crown vaccine can indeed effectively prevent infection in overseas real-world studies, and can significantly prevent severe illness and death.
For example, the Chilean Ministry of Health published in the "New England Journal of Medicine" the results of a real-world study of Coxing Zhongwei inactivated vaccines. The sample size reached more than 10 million people. The conclusion showed that the protection rate against infection was 65.9%, and the protection against hospitalization was 65.9%. The rate is 87.5%, the protection rate against severe illness is 90.3%, and the protection rate against death is 86.3%.
Sri Lanka also officially released a research report on inactivated vaccines from Sinopharm, showing that inactivated vaccines can not only stimulate humoral immunity, but also induce immune responses of T cells and memory B cells.
The general population is not busy with booster vaccination
So, for the highly infectious and pathogenic mutant strains, do we need to inoculate a booster shot for the entire population?
Zheng Zhongwei announced the conclusions of experts organized by the vaccine research and development team to conduct special research on whether to carry out intensified vaccination.
The expert group discussed the research results of enhanced injection vaccines carried out by Sinopharm Zhongsheng and Beijing Kexing.
After 6 months of vaccination, the antibodies of the two vaccines dropped. After the third dose of vaccination, the safety data was similar. The antibody level rose rapidly, rising to 15-30 times the original in 14 days.
"However, experts analyze that the current situation of epidemic prevention and control in my country is very good. Whether to carry out booster immunization for the whole population 6 months after vaccination, experts suggest that further research is needed, and comprehensive research and judgment should be made according to the situation of the epidemic. "Zheng Zhongwei said that experts suggest that intensive vaccination can be carried out for three groups of people after completing the immunization procedures for 6 months, including customs, border inspections, aviation, isolation points, designated medical institutions and other staff, and people with relatively low immune functions. , Because of the need to work, study, and communicate with people from overseas high-risk areas or countries.