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A nerdy dive into Meta’s Orion glasses. A weekly newsletter by David Pierce designed to tell you everything you need to download, watch, read, listen to, and explore that fits in The Verge’s ...

由于脑膜炎球菌多糖疫苗(meningococcal polysaccharide vaccine，MPSV)的免疫原性、安全性、免疫记忆和无法产生群体性免疫等局限性，不适合2岁以下婴幼儿接种，脑膜炎球菌多糖结合疫苗(meningococcal polysaccharide conjugate vaccine，MPCV)有效克服了多糖疫苗的不足，逐渐成为 ...