On April 24, Zhong Nanshan, an academician of the Chinese Academy of Engineering, stated at the 2021 Frontiers of Medical Science Forum of the Chinese Academy of Engineering that China is currently fully developing vaccines against variant strains. Experts said that the current virus mutations only appear in some countries and regions, not in the world on a large scale, so the mutation virus will not affect the current vaccine prevention effect.
Zhong Nanshan said in an online report on the forum that the main problem currently encountered is the mutation of the new crown virus. The mutant strains currently appearing are from the United Kingdom, Brazil, Nigeria, South Africa and other places. It now appears that the whole virus inactivated vaccine being used has reduced its effectiveness against the B1351 mutant strain that emerged in South Africa. Now we are fully developing vaccines against mutant strains.
Yang Zhanqiu, a professor at the Institute of Virology of Wuhan University Medical School, told the Global Times that the current virus mutations only appear in some countries and regions, not on a large scale in the world, so the mutation virus will not affect the current vaccine prevention effect. However, if there is a pandemic of virus mutations in the world for some time to come, the vaccines currently used will be ineffective. For example, South Africa’s B1351 has a wide range of mutations in the Americas, Europe, Asia and other countries, that is to say, if it is pandemic in the world, then the currently used vaccine is invalid.
An immunology expert told the Global Times that there is no sign of spread for the time being, but there is always a risk. “It is very likely that, like the flu vaccine, the vaccine needs to be replaced every year and re-vaccinated.”