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Expert: XD, XF are recombinations of Delta and Omicron
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New COVID19 variants such as BA.1.1 derived from Omicron are evolving in eastern China's Suzhou. Doctor Alice HyunKyung Tan, at MizMedi Women's Hospital in Seoul, shares more with us. She says that XD, XF are re-combinations of Delta and Omicron. 

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