Some experts suggest Omicron variant may have evolved in an animal host
When Covid-19 variants arise, the accepted wisdom is that the constellation of mutations they contain developed in an immunocompromised person who contracted the virus and couldn’t shake the infection. But some scientists have an alternative theory for where the latest variant of concern, Omicron, may have acquired the unusual mutations that stud its spike protein.
They speculate the virus could have evolved in another animal species.
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