COVID: should we start wearing masks again?
COVID Evolution and Variants: One thing that can be guaranteed about COVID is that evolution will provide us with a more or less constant stream of new coronavirus variants, some of which will be more successful at infecting people. Talk of mutations sounds scary and it can lead to serious problems, but it would be a mistake to think that it’s always the case. BA.2.86 (Covid Variant) Concerns: BA.2.86 (nicknamed pirola) is one such new COVID variant that has aroused concern from some doctors and scientists because of the high number of mutations in its spike protein, the molecule on