Chinanews.com, March 15 "At present, we have not found that the mutant strain of the new crown virus has a significant impact on the protection rate of the conditionally marketed new crown vaccine in my country." Deputy leader of the vaccine research and development team of the scientific research team, Chinese Academy of Engineering Academician Wang Junzhi said on the 15th.
Data map: Medical staff inject vaccines for vaccinators.
Photo by China News Agency reporter Jiang Qiming
On the 15th, the State Council’s Joint Prevention and Control Mechanism held a press conference on the promotion of new crown vaccination.
In response to the question "How effective are the several domestic vaccines that have been approved for conditional marketing in response to the mutation of the new coronavirus?" Wang Junzhi made the above statement.
Wang Junzhi also said that research and development companies used vaccine immune serum to test and evaluate the cross-neutralization ability of the currently collected domestic and foreign variants. The latest report did not find inactivated vaccines and recombinant protein vaccines against the mutant strains. Including the South African strain, the neutralizing activity has significantly decreased, so follow-up studies are needed.
"We should attach great importance to this issue. The long-term spread of the virus may result in the accumulation of multiple mutations. When the accumulation reaches a certain level, there will be a risk of affecting the protection of the vaccine. This risk exists. In order to effectively deal with the impact of virus mutation, We must plan ahead and prepare actively." Wang Junzhi said.
Wang Junzhi pointed out that two aspects of work are very important. On the one hand, close monitoring, real-time monitoring, collection as soon as possible after discovery, and measurement after collection to discover its impact on the vaccine in time.
On the other hand, to strengthen vaccine platform construction, through the deployment of five technical routes, my country has established a very powerful vaccine research and development platform.
"my country is also actively researching a new generation of vaccines. Once we are worried about the disappearance or drastic reduction of vaccine immunity caused by virus mutation, it is very critical to be able to develop vaccines against mutant strains in the shortest time." Wang Junzhi said.
"On the whole, we need to improve our ability to deal with various virus variants through the improvement of comprehensive capabilities. This is the most important." Wang Junzhi said.