Scientists in the United Kingdom yesterday reported that a small number of B117 variants have developed the E484K mutation thought to help SARS-CoV-2 partly evade immunity, and today another UK group said their lab experiments suggest the mutation added to B117 may dampen the impact of vaccination after one dose.In its weekly update on pandemic activity, the World Health Organization (WHO) said today that the three variants of concern have been reported in more countries, with 80 now reporting the B117 variant.B117 variant change raises red flags about vaccine protectionYesterday's findings on the E484K mutation in B117 come from a Public Health England update on the variant.