Recently, however, the mutation N50 1Y in novel coronavirus's S protein receptor binding region was found in the UK, and the infectivity was indeed enhanced, with the transmission index rising from 1. 1 to 1.5. In addition, according to the mathematical model, the number of infected cases of mutant strains in Britain increased by 70% compared with that of non-mutant strains.
In addition, the mutated viruses found in South Africa, such as the 50 1V2 variant, are indeed found to be more contagious. They spread faster among young people and the disease seems to be more serious.
Therefore, for the recently discovered virus mutation, there has indeed been an increase in infectivity and an increase in transmission index. However, it remains to be seen whether virus variation will still lead to increased infectivity in the future.