According to the latest research,there are many mutant strains of the Covid-19 virus, which are the British variants (VOC202012/01, B.1.1.7 or 20B/50Y.V1). There are 4 mutation points on the nucleoprotein, which are located at D3L, R203K, G203R and S235F. South Africa variants (501.V2, 20C/501Y....
Read more