The World Health Organization has said it is “very concerned” about a spike in severe Covid-19 cases in China and called on Beijing to step up its vaccination programme, especially among vulnerable groups.
世界卫生组织(WHO)表示对manbetx3.0 新冠重症患者数量激增“非常关切”，并呼吁北京方面加强疫苗接种计划，尤其是脆弱群体的疫苗接种。
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