With the delta variant virus sweeping the world, the United States, Germany, France and other countries plan to carry out enhanced vaccination, and Sinopharm has also carried out enhanced vaccination research in the UAE. The topic of whether vaccination booster is needed has attracted much attention < p > < / P > < p > Zhang Yuntao, chief scientist of China biology of Sinopharm group, was interviewed by chinanews.com, global times and other media on the 23rd to introduce the strengthening of needle R & D and respond to the concerns of all parties on relevant hot topics. Zhang Yuntao said that from the test carried out by Sinopharm in the UAE, there is no problem in strengthening the safety of needles. In the future, it should be a priority to choose an opportunity for special people to carry out enhanced needle vaccination < p > Zhang Yuntao, chief scientist and vice president of China biology of Sinopharm group, self Vision China < / P > < p > "from the perspective of ordinary people, we should first choose vaccination booster needle in the future." Zhang Yuntao told the Global Times reporter that from the current data, regardless of the technical route adopted, the antibody level for COVID-19 vaccine will decline for about half a year. Based on various data, the antibody level in the body decreased six months after two injections of Chinese biological inactivated vaccine < p > Zhang Yuntao believes that under the condition of realizing "all connections" and forming an immune barrier in China, it should be a priority to choose an opportunity to carry out intensive needle vaccination for special people. Zhang Yuntao added that on the one hand, the special population should include the elderly over the age of 60. The previous phase I / II clinical trials showed that the immunogenicity of the elderly after vaccination was lower than that of other populations; On the other hand, employees in catering, aviation, express and other industries also belong to special groups and should be vaccinated < p > Sinopharm group carried out a booster study of 9300 people in the United Arab Emirates. In the booster study in the United Arab Emirates, the interval between the second and third injections was more than 6 months. Zhang Yuntao said that the longer interval resulted in a significant increase in the antibody level in the subjects, even 5-10 times, It shows that reinforcing needle plays an obvious role in preventing variant virus infection and disease onset

the new crown vaccine of the Abu Dhabi people in the UAE is illustrated by the China Bio WeChat official account

on the safety of needles. Zhang Yuntao said, "the overall safety data is excellent. No matter what the local reactions and systemic reactions are, it is in line with expectations, and there is no difference between the two needles." In terms of immunogenicity, the antibody increased by about 30% after the third injection < p > "from these data, it should be said that there is no problem in strengthening the safety of the needle." Zhang Yuntao said that according to relevant research and judgment and some atypical cohort research data, it is possible to carry out intensive vaccination at a selected time in the future after forming an immune barrier for the whole population and receiving the second injection as much as possible < p > according to him, several new crown vaccines, especially inactivated vaccines, which have been approved by China's State Drug Administration for conditional listing, still have a good protective effect on Delta strain and beta strain according to the cross neutralization test data in the laboratory. In addition, according to some real-world studies, inactivated vaccines are also very effective in preventing delta strain < p > if the technical route of booster injection is different from that of early vaccination, what impact will it have on its safety and effectiveness? Zhang Yuntao said that China issued a guide to COVID-19 vaccine technology recommendation to complete the vaccination with the same vaccine product. After the first shot is inoculated with inactivated vaccine, the second shot shall also be inoculated with inactivated vaccine. If you inoculate the third needle, it is the same mechanism. " < p > delta strain has become the most important strain in the global epidemic. By the end of July, 132 countries and regions had reported the discovery of the strain. Academician Zhong Nanshan said novel coronavirus pneumonia cases were decreasing in most countries in June this year. But recently, Israel, Britain, the United States, Iran and other countries are increasing. "This shows that there is another wave of new communication coming." p> < p > Israel began to vaccinate people over 60 years old with booster shots on July 30. According to the data released by the Israeli Ministry of health on July 22, the protective effect of Pfizer Xinguan vaccine booster shot for people aged 60 and over was significantly better than that after two doses of vaccine. On the 18th, US President Biden announced that the United States plans to provide the public with new coronal vaccine booster from September 20. In addition, countries that have launched or announced plans to strengthen injection include France, the United Arab Emirates, South Korea, the United Kingdom, Greece, Japan and so on