According to the National Health Commission, as of April 10, 2021, China's 31 provinces (autonomous regions and municipalities directly under the Central Government) and the Xinjiang Production and Construction Corps have reported a cumulative total of 164.471 million doses of the new crown virus vaccine, and the total number of vaccinations is the second in the world.
How many people do we need to vaccinate at least to build an immune barrier in our country?
Wang Huaqing, chief expert of the immunization program of the Chinese Center for Disease Control and Prevention, said in an interview with CCTV "Face to Face" on the evening of April 11 that our country wants to establish an immune barrier, and it may take more than 1 billion people to be vaccinated against the new crown, and the higher the vaccination rate, the stronger the formation of the immune barrier, and we still have a way to go.
Some people feel that the current situation is not so urgent, and will it be better for individuals to delay and then vaccinate?
For this idea, Wang Huaqing said that if everyone drags this vaccination backwards, then our immune barrier will never be established, and our desire to remove the mask may not become a reality. And if the disease continues to spread, the rate at which the virus mutates will increase and its infectivity will increase. In serious cases, the vaccine currently being developed may fail. So the best way to stop the speed of virus mutation is to get vaccinated.
At the press conference of the joint prevention and control mechanism of the State Council held yesterday, Wu Zunyou, chief expert of epidemiology of the Chinese Center for Disease Control and Prevention, also said that the threshold value of the vaccination rate required by herd immunity for different infectious diseases is not the same, and the stronger the infectivity, the higher the proportion of vaccination that needs to be vaccinated; the weaker the infectious disease, the lower the vaccination rate required.
For example, the new crown needs to reach 70% and 80% of the population to produce a group protection effect. If the immunization rate reaches 10%, 20%, 30%, or even 40%, it can only play the protection of the individual and cannot produce herd immunity.
Those who meet the vaccination conditions, don't wait and see!
Earlier, Dr. Zhang Wenhong, director of the Department of Infectious Diseases at Huashan Hospital affiliated to Fudan University in Shanghai, said on Weibo: "Today there will be no vaccination, and there will be a long queue tomorrow to get the vaccine." ”
He said countries with high vaccination rates and wide coverage have invariably contained outbreaks (such as Israel, the United Kingdom and the United States). "There is an urgent need to establish an immune barrier as soon as possible around the world, otherwise the mutations that evade vaccine protection may evolve rapidly, and the global restart may be delayed again."
In an interview at the end of March, Zhong Nanshan issued a direct "warning": "Don't wait for all countries to be vaccinated, and China is unimmunized, that is very dangerous." ”
Comprehensive report by Beijing Daily (ID: Beijing_Daily).
Source: Face to Face, Beijing Daily client (reporter Yang Xujun, Sun Leqi), National Health Commission, @Dr. Zhang Wenhong, previously reported
Source: Beijing Daily WeChat public account | Journalist Su Yue
Edit: Su Yue
Process Editor: Dan Guo