So the critical question is not are variants being produced. Of course they’re going to be produced. The critical question is do these variants make the virus more contagious, more virulent, and most importantly, far and away most importantly, have these variants evaded recognition by vaccine-induced immune response - Paul Offit


image by: WFTV Channel 9

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A deep dive on the evolution of COVID and its variants

When SARS-CoV-2 was first isolated in January 2020, researchers who studied viral genetics said it would mutate at some point. With millions of chances to replicate and adapt, mutations were an inevitability. But at first, many scientists thought the process would play out over years or longer. Instead, the past 24 months have been shaped by a procession of new variants, each with its own ability to cause disease. Over the last two years, a flood of imaging, genetic sequencing, and experimenting with everything from modified viral particles to disembodied spike proteins has allowed scientists to explain how this pathogen and its variants killed more than 6 million people and infected millions…

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 A deep dive on the evolution of COVID and its variants

The reason we know so much about how SARS-CoV-2 works is because virologists have been tracking its mutations in real time. What they've seen has floored them.

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