What we know about the new COVID-19 mutations
What we know about the new COVID-19 mutations While it remains uncertain whether two variants would affect the efficacy of existing vaccines, new versions could be developed within weeks, German biotechnology firm BioNTech said AFP, PARIS The emergence in the UK and South Africa of two new variants of COVID-19, which are potentially far more infectious versions of the coronavirus, has prompted widespread concern. Here is what we know — and what we do not — about the mutations. WHAT ARE THEY? All viruses mutate when they replicate to adapt to their environment. Scientists have tracked mult...