COVID-19 疫情已發生超過一年半,即使疫苗推出,各地仍因變種病毒株而再度爆發疫情。越來越多專家認為,要達到「群體免疫(herd immunity)」阻止疫情蔓延是天方夜譚,但這並不代表接種疫苗無用。《立場新聞》疏理了數個相關問題與答案,讓讀者了解疫情現況…https://www.thestandnews.com/%E5%81%A5%E5%BA%B7/%E7%96%AB%E6%83%85%E5%9B%9B%E5%95%8F%E5%A6%82%E4%BD%95%E9%81%94%E5%88%B0%E7%BE%A4%E9%AB%94%E5%85%8D%E7%96%AB%E6%98%AF%E5%90%A6%E8%A6%81%E8%88%87%E7%96%AB%E5%85%B1%E5%AD%98 …
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