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並前往https://www.who.int/publications/m/item/enhancing-readiness-for-omicron-(b.1.1.529)-technical-brief-and-priority-actions-for-member-states

Enhancing response to Omicron SARS-CoV-2 variant - WHO ...

On 26 November 2021, WHO designated the variant B.1.1.529 a variant of concern (VOC), on the basis of advice from WHO's Technical Advisory Group on Virus ...

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