资讯摘要✂️
「 joshchin: Important data on the hotly debated efficacy of Chinese vaccines: China's traditional CoronaVac just as effective as BioNTech mRNA shot at preventing death and serious disease among the elderly. Critically, though, that's only after 3 doses. https://t.co/yKjn2ijrWghttps://twitter.com/joshchin/status/1506174489876344833 Joel Chan