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email article Researchers have had an unprecedented front-row seat to real-time viral evolution with SARS-CoV-2, which has achieved significant genetic diversity in the year that it s been circulating widely. What have they learned about how closely it s following traditional patterns of viral evolution, and what does that imply about its future? SARS-CoV-2 variants have emerged rapidly during the pandemic because of high transmission rates, said Robert Cyril Bollinger, MD, MPH, a professor of infectious diseases at Johns Hopkins University. When you have millions of viruses transmitted in the world, and when they re replicating millions or billions of times within each person, there s just lots of random mutation. You can hardly even calculate how much, he said.

Stanford universityUnited statesSouth africaSouth africanFrancois ballouxRobert cyril bollingerVeronica hackethalKumar sahooJohns hopkins universityGenetics institute at university college londonWorld health organizationJohns hopkinsGenetics instituteUniversity collegeMalaya kumar sahooMedpage today