群体免疫真的靠谱吗？西班牙新研究提出质疑
<p>通过大部分人口产生免疫力来阻断病毒传播的群体免疫策略，在西方国家中一直被寄予厚望。日前，西班牙的一项大规模研究得出结果称，从西班牙人口产生新冠病毒抗体的比例来看，群体免疫恐怕难以实现。</p><p><span word="Covid">Covid</span>-19 <span word="antibodies">antibodies</span> <span word="in">in</span> <span word="Spain">Spain</span>’<span word="s">s</span> <span word="population">population</span> “<span word="are">are</span> <span word="insufficient">insufficient</span> <span word="to">to</span> <span word="provide">provide</span> <span word="herd">herd</span> <span word="immunity">immunity</span>,” <span word="a">a</span> <span word="new">new</span> <span word="study">study</span> <span word="has">has</span> <span word="claimed">claimed</span>, <span word="despite">despite</span> <span word="the">the</span> <span word="country">country</span> <span word="being">being</span> <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="worst">worst</span>-<span word="affected">affected</span> <span word="by">by</span> <span word="the">the</span> <span word="pandemic">pandemic</span>.</p><p>尽管西班牙是受疫情冲击最严重的国家之一，但一项新研究称，西班牙人口的新冠病毒抗体“不足以产生群体免疫”。</p>
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