研究：新冠病毒抗体可能在数月内消失
<p>就在全球科学家积极研发新冠疫苗的时候，英国的一项研究发现，新冠肺炎患者体内的抗体会在数月内消失，而疫苗提供的抗体可能也会如此，这意味着人们无法通过一次性注射疫苗“一劳永逸”。更糟的是，新冠病毒可能会像感冒一样让人们每年重复感染。</p><p> <span word="A">A</span> <span word="woman">woman</span> <span word="holds">holds</span> <span word="a">a</span> <span word="small">small</span> <span word="bottle">bottle</span> <span word="labeled">labeled</span> <span word="with">with</span> <span word="a">a</span> "<span word="Vaccine">Vaccine</span> <span word="COVID">COVID</span>-19" <span word="sticker">sticker</span> <span word="and">and</span> <span word="a">a</span> <span word="medical">medical</span> <span word="syringe">syringe</span> <span word="in">in</span> <span word="this">this</span> <span word="illustration">illustration</span> <span word="taken">taken</span> <span word="April">April</span> 10, 2020. <span word="REUTERS">REUTERS</span>/<span word="Dado">Dado</span> <span word="Ruvic">Ruvic</span></p><p><span word="People">People</span> <span word="who">who</span> <span word="have">have</span> <span word="recovered">recovered</span> <span word="from">from</span> <span word="Covid">Covid</span>-19 <span word="may">may</span> <span word="lose">lose</span> <span word="their">their</span> <span word="immunity">immunity</span> <span word="to">to</span> <span word="the">the</span> <span word="disease">disease</span> <span word="within">within</span> <span word="months">months</span>, <span word="according">according</span> <span word="to">to</span> <span word="research">research</span> <span word="suggesting">suggesting</span> <span word="the">the</span> <span word="virus">virus</span> <span word="could">could</span> <span word="reinfect">reinfect</span> <span word="people">people</span> <span word="year">year</span> <span word="after">after</span> <span word="year">year</span>, <span word="like">like</span> <span word="common">common</span> <span word="colds">colds</span>.</p><p>一项研究显示，新冠肺炎患者康复后可能会在数月内失去对新冠病毒的免疫力，该研究指出，新冠病毒可能会和普通感冒一样让人们每年重复被感染。</p><p><span word="In">In</span> <span word="the">the</span> <span word="first">first</span> <span word="longitudinal">longitudinal</span> <span word="study">study</span> <span word="of">of</span> <span word="its">its</span> <span word="kind">kind</span>, <span word="scientists">scientists</span> <span word="analysed">analysed</span> <span word="the">the</span> <span word="immune">immune</span> <span word="response">response</span> <span word="of">of</span> <span word="more">more</span> <span word="than">than</span> 90 <span word="patients">patients</span> <span word="and">and</span> <span word="healthcare">healthcare</span> <span word="workers">workers</span> <span word="at">at</span> <span word="Guy">Guy</span>’<span word="s">s</span> <span word="and">and</span> <span word="St">St</span> <span word="Thomas">Thomas</span>’ <span word="NHS">NHS</span> <span word="foundation">foundation</span> <span word="trust">trust</span> <span word="and">and</span> <span word="found">found</span> <span word="levels">levels</span> <span word="of">of</span> <span word="antibodies">antibodies</span> <span word="that">that</span> <span word="can">can</span> <span word="destroy">destroy</span> <span word="the">the</span> <span word="virus">virus</span> <span word="peaked">peaked</span> <span word="about">about</span> <span word="three">three</span> <span word="weeks">weeks</span> <span word="after">after</span> <span word="the">the</span> <span word="onset">onset</span> <span word="of">of</span> <span word="symptoms">symptoms</span> <span word="then">then</span> <span word="swiftly">swiftly</span> <span word="declined">declined</span>.</p><p>在首个同类型纵向研究中，科学家分析了盖伊和圣托马斯国民健康保险信托基金会的90多名患者和医护人员的免疫反应，发现可以摧毁病毒的抗体水平在症状出现三周后达到高点，然后就迅速下降。</p>
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