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With Omicron or Delta outbreaks already in multiple provinces, scientists say next week’s Winter Olympics will present a major test of China’s zero-tolerance approach.
News of a ‘super variant’ combining Delta and Omicron spread rapidly last week, but researchers say it never existed and the sequences might have resulted from contamination.
Researchers hope that a person who has so far lived for a week with a genetically modified pig heart will provide a trove of data on the possibilities of xenotransplantation.