AdvertisementPeople Are Talking About A 'Double Mutant' Variant In India. What Does That Mean?April 24, 2021Michaeleen DouclefffacebookEmailLike all viruses, the coronavirus mutates. Above: In this depiction of the the South African coronavirus variant B.1.531, the thin yellow band around the rim of indicates a mutation site. The virus spike (red) is attaching to a human cell receptor (blue). (Juan Gaertner)