Dangane da sabon bincike, akwai nau'ikan mutant da yawa na ƙwayar cuta ta Covid-19, waɗanda sune bambance-bambancen Birtaniyya (VOC202012/01, B.1.1.7 ko 20B/50Y.V1). Akwai maki 4 na maye gurbi akan nucleoprotein, waɗanda suke a D3L, R203K, G203R da S235F. Bambance-bambancen Afirka ta Kudu (501.V2, 20C/501Y....
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