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https://www.reuters.com/business/healthcare-pharmaceuticals/omicron-severe-previous-covid-variants-large-study-finds-2022-05-05/
您即将离开知乎,请注意您的帐号和财产安全。
https://www.reuters.com/business/healthcare-pharmaceuticals/omicron-severe-previous-covid-variants-large-study-finds-2022-05-05/