Novel Corona virus has been reported in England, South Africa and Nigeria since December. Many countries around the world responded quickly, including banning flights from the UK and South Africa, while Japan announced it would suspend the admission of foreigners starting Monday.
According to the statistics released by Johns Hopkins University in the US, the number of COVID-19 cases has exceeded 80 million and the number of deaths has exceeded 1.75 million as of early Sunday Beijing time.
It is not surprising that novel Corona virus mutated, as the RNA virus to which it belongs has a rapid mutation rate. Novel Corona virus is actually more stable than other RNA viruses such as influenza viruses. Novel Corona virus mutates at a much slower rate than influenza viruses, according to WHO chief scientist Sumiya Swaminathan.
Novel Corona virus mutation has already been reported. In February, for example, researchers identified a novel Corona virus strain with a D614G mutation that was then circulating mainly in Europe and the Americas. Some studies have found that the virus with D614G mutation is more adaptive.
Despite several genetic mutations in the virus since the start of the COVID-19 outbreak, none of the known mutations, including the one in the UK, have had a significant impact on drugs, treatments, tests or vaccines, a WHO expert said Wednesday.
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Post time: Dec-28-2020