January 23, 2022

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Omicron mutations alarm scientists, but new variant first must prove it can outcompete delta – The Washington Post

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Earlier variants, including alpha and delta, had mutated in ways that enhanced their transmissibility. But scientists have long feared the possibility that the coronavirus, SARS-CoV-2, would evolve to become a more slippery, elusive pathogen — evading, even if only partially, the early lines of defense from the immune system, including neutralizing antibodies.

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