True or false: Virus variants weaken the effectiveness of COVID 19 Vaccine Coronavirus vaccines have significantly reduced the infectiousness of COVID 19 cases and showed significant protective efficacy against COVID 19. However, the recent reported COVID19 variants B.1.1.7 in the UK and B.1.351 in South Africa are of concern because of their more accessible and […]
Multiple SARS-CoV-2 variants are circulating globally. Several new variants have emerged in the fall of 2020. Many variants are relatively unremarkable. But scientists have been keeping a close watch on three rapidly spreading variants—first identified in the UK, South Africa, and Brazil—which harbor an unusual constellation of mutations. They all share a mutation that affects […]