How to take the two injections of Cronavirus most effectively?How long does it take to develop antibodies?How about the protection period?-- Yang Xiaoming, chairman of Sinopharm China Biology Group, explained the focus of vaccination
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Q: After two injections, how long does it take to develop antibodies to form a protective effect?
A: Individually, there are differences in how sensitive each person is to the vaccine and how long it takes to develop protection after the vaccine is administered.
From the current national medicine group, China life will be coronavirus inactivated Ⅲ phase of clinical trial of periodic analysis, 10 days after the first injection can produce antibody, but the antibody generation gap between different people is very big, so we're going to the second injection.After two injections, antibodies with high titers can be produced 14 days later, forming effective protection, and the positive conversion rate of neutralizing antibodies in the whole population reaches 99%.
Q: How long is the protection period after antibodies are produced?
A: We are also closely monitoring the protection period of the vaccine. It has been observed for more than eight months by the earliest vaccinators, and the results show that the vaccine is still effective.Ⅰ period, Ⅱ period clinical subjects are also continue to observe, the data obtained from already see, half a year no problem, can protect the eight months, we are determined, the results haven't come out.
Q: In the current world of accelerated coronavirus mutation, to what extent can the inactivated vaccine resist virus mutation?
A: When Sinopharm China Coronavirus inactivated vaccine was launched, we conducted cross-neutralization and protection tests on new crown strains from different sources around the world.From the obtained data, Sinopharm China Biological Coronavirus inactivated vaccine is broad-spectrum protection, from different regions of the global strains have a very good crossover neutralization.Tests on the variant found in Britain are now under way and the initial results are good enough to be protected.
Q: What is the production capacity expansion and the next supply arrangement of Sinopharmaceuticals' China bionovel Coronavirus inactivated vaccine?
A: Sinopharmaceutical has built the Coronavirus inactivated vaccine high-grade biosafety production workshops in Beijing and Wuhan respectively, which have been put into large-scale production.Phase II production capacity, the whole new plant is being simulated and verified, after passing, the annual capacity can reach more than 1 billion doses in 2021.Phase III capacity, expansion will be larger.
At present, we have a large number of overseas orders, so we need to do our best to expand production, and the premise of expansion is to achieve a stable process, safe and effective products, in line with China's drug regulatory system and quality indicators.
