A Cypriot scientist defended his assertion that a new strain of Covid-19 exists that combines characteristics of the delta and omicron variants.
Other scientists have speculated that Leonidos Kostrikis’s findings are a result of laboratory contamination. But he told Bloomberg in an emailed statement Sunday that the cases he has identified “indicate an evolutionary pressure to an ancestral strain to acquire these mutations and not a result of a single recombination event.”
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