According to Paul tambyah, senior consultant of the National University Hospital of Singapore and President elect of the international society of infectious diseases, there is evidence that the death rate of the new coronavirus strain, named d614g mutation, is decreasing in some areas, which means that it is less lethal. According to the World Health Organization, scientists discovered the virus mutation as early as February, and the mutant strain has spread in Europe and America. The who also said there was no evidence that the mutation caused more serious disease. On Sunday, Noor Hisham Abdullah, Malaysia’s director of health, urged the public to be vigilant after authorities found d614g mutations in two recent outbreaks. Nosihan said the d614g strain detected in the country was 10 times more infectious, and the vaccine currently being developed may not be effective against this variant. But tambyah believes that the virus may not mutate enough to affect the effectiveness of the vaccine.