Home » Experts in this round of effective control of the epidemic in mainland China: vaccination has a clear effect-China Overseas Chinese Network

Experts in this round of effective control of the epidemic in mainland China: vaccination has a clear effect-China Overseas Chinese Network

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  (Fighting against New Coronary Pneumonia) The current round of the epidemic in Mainland China has been effectively controlled Expert: Vaccination has a clear effect

China News Service, Beijing, August 27th. Title: The current round of the epidemic in Mainland China has been effectively controlled Expert: Vaccination has a clear effect

China News Agency reporter Li Chun

As of August 26, China has vaccinated more than 2 billion doses of the new coronavirus vaccine, and the new round of epidemics that have recently occurred in Nanjing, Yangzhou, Zhengzhou and other places have also been effectively controlled. At a press conference held on the 27th by the Joint Prevention and Control Mechanism of the State Council of China, participating experts stated that “vaccination has a clear effect.”

Data map: On August 27, an elderly person in Hohhot, Inner Mongolia Autonomous Region was vaccinated against the new coronavirus.Photo by China News Agency reporter Liu Wenhua

  76% of Chinese people are vaccinated

According to the press conference, China’s new coronavirus vaccination work is currently progressing smoothly. As of the 26th, the country has received a total of 2.03.91 million doses of the new crown virus vaccine. The total number of vaccinations reached 1.072.5 million, covering 76% of the country’s population. The number of people who completed the entire vaccination was 889.439 million.

At present, with the prevalence of delta variants, the global epidemic has rebounded sharply, and the pressure on China’s foreign defense imports is also continuing to rise. The arrival of autumn and winter has further increased the difficulty of epidemic prevention and control. Speeding up vaccination is still a focus of the current epidemic prevention and control.

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Zheng Zhongwei, head of the Vaccine R&D Team of the Joint Prevention and Control Mechanism Research Team of the State Council, and director of the National Health Commission’s Medical and Health Technology Development Research Center, said that the current variant strains are prevalent, especially the high-transmissive delta strain. Next, I call on everyone to speed up vaccination and do everything they need.

“Everyone may also be worried about whether there will be other mutant strains in the future. In fact, the faster the vaccination rate, the lower the risk of virus mutation.” He said.

Wu Liangyou, deputy director of the National Health Commission’s Disease Control Bureau, also pointed out that vaccination is an effective means to prevent the new crown pneumonia epidemic. At the same time, it is necessary to strengthen normalized prevention and control measures, encourage the people to take good personal protection, and continue to adhere to good hygiene habits such as wearing masks, washing hands frequently, and reducing gatherings. “This is not only to protect yourself, but also to protect the health of family members and the public.”

  The new crown vaccine played a role

Since the first drop on August 16, China’s current local confirmed cases have dropped for 11 consecutive days, and the current round of the epidemic has now been effectively controlled. Experts pointed out that the new crown vaccine has also played a role in this round of epidemic prevention and control.

According to Zheng Zhongwei, among these infected people, those who have completed the immunization program for more than 14 days account for less than 5% of severe cases, that is, more than 95% of severe cases are those who have not been vaccinated or have not completed the immunization program. Among severely ill people over 60 years of age, more than 90% have not been vaccinated or have not completed vaccination. None of the critically ill patients in Yangzhou were vaccinated. “New crown vaccination, it can be said clearly that the control of this wave of epidemics is beneficial.”

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Not only in China, but real-world data from other countries also show the effectiveness of China’s new crown vaccine. According to the press conference, as of the 26th, there have been more than 5 billion doses of the new crown vaccine worldwide, of which more than 2.5 billion doses of China’s new crown vaccine have been vaccinated.

Since May, Peru, Thailand, Chile, Argentina, Mongolia, Bahrain, Uruguay, Sri Lanka and other countries that have been vaccinated with China’s new crown inactivated vaccine on a large scale have successively released real-world research data. Zheng Zhongwei said that overall, 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’s not necessary or feasible” to reseed those who have not developed antibodies

At present, many people have been vaccinated for more than 6 months, and the topic of whether to vaccinate the booster injection has attracted much attention.

Zheng Zhongwei said that recently, experts organized by the vaccine research and development team conducted a special study on whether to carry out booster vaccination. Combined with the research results on booster vaccination conducted by Sinopharm Zhongsheng and Beijing Kexing, it was found that the vaccines of the two companies were vaccinated for 6 months. After that, the antibodies all declined to varying degrees. He also said that this is in line with the law of conventional vaccines.

“But after the decline, within 6 months, they had the third dose of vaccination. First, they found that the vaccination was very safe, and the safety data of the first and second doses were similar.” Zheng Zhongwei said. Secondly, the third dose was inoculated. After the administration, the antibody level of the recipients increased rapidly, which was equivalent to 15 to 30 times of the original by 14 days.

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In this part of the population who received the third dose, when they were tested again 6 months later, even though the antibody still dropped, the low point exceeded the peak of the two doses. “The protective effect of enhanced vaccination on the vaccine can be improved from the perspective of immunogenicity.” Zheng Zhongwei pointed out.

Talking about whether it is necessary to conduct antibody testing for people who have been vaccinated, and to reinoculate those who have not developed antibodies after vaccination, the expert also said that to judge whether a vaccine is effective, it is mainly through pre-clinical trials and later based on large-scale The real-world study of the epidemic is based on comprehensive research and judgment, and it is not possible to simply judge whether the vaccine is effective and protects based on the level of neutralizing antibodies.

“Under the current situation, we insist that there is no need to carry out large-scale population antibody testing, and it is not feasible.” Zheng Zhongwei said. (over)

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