奥密克戎病毒还会持续变异吗？湖北疾控最新提醒
<section><section powered-by="xiumi.us"><section><section powered-by="xiumi.us"><p style="text-align: center;"></p><p><br/></p><p><br/></p><section style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(34, 34, 34); font-family: system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.544px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><section powered-by="xiumi.us" style="margin: 0px 0px 10px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><section style="margin: 0px; padding: 16px 20px; outline: 0px; max-width: 100%; display: inline-block; width: 578px; vertical-align: top; background-color: rgba(199, 230, 255, 0.33); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><section powered-by="xiumi.us" style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; color: rgb(94, 94, 94); line-height: 1.8; letter-spacing: 1px; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(0, 0, 0); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;">疫情中，无症状感染者有所增加，不少人由此认为奥密克戎病毒会越传越弱，真是如此吗？湖北疾控专家提醒：最新变异株的传播能力，相比其他进化分支有所增强，且传播速度快、范围广，病毒载量相对较高。</span></p></section></section></section></section><p><br/></p><p></p><section style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(34, 34, 34); 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visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><section powered-by="xiumi.us" style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><section style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; display: flex; flex-flow: row nowrap; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><section style="margin: 0px 10px; padding: 0px; outline: 0px; max-width: 100%; display: inline-block; width: auto; vertical-align: top; flex: 100 100 0%; align-self: flex-start; height: auto; line-height: 0; border-width: 0px; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><section powered-by="xiumi.us" style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; display: inline-block; width: 558px; height: 8px; vertical-align: top; overflow: hidden; background-color: rgb(67, 166, 215); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><section style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><svg viewbox="0 0 1 1" style="float: left; line-height: 0; width: 0px; vertical-align: top; visibility: visible;"></svg></section></section></section></section></section><section style="margin: 0px 0px 16px; padding: 0px; outline: 0px; max-width: 100%; text-align: justify; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><section powered-by="xiumi.us" style="margin: 0px; padding: 20px; outline: 0px; max-width: 100%; display: inline-block; width: 578px; vertical-align: top; border-width: 1px; border-style: solid; border-color: rgb(62, 62, 62); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><section powered-by="xiumi.us" style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(90, 90, 90); font-size: 17px; line-height: 1.8; letter-spacing: 1px; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><section style="margin: 0px 0px 15px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(0, 0, 0); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;">病毒变异是非常常见的自然规律，是病毒作为很小、结构很简单的微生物对外界压力的一种反应。新冠病毒作为病毒家族的一员，变异这个特点表现得更加充分。新冠病毒虽然出现时间不长，但是有大量自然感染人群和更大量疫苗接种人群存在的情况下，它的变异速率明显加快。</span></section><p style="margin-top: 16px; margin-bottom: 15px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(0, 0, 0); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;">研究发现，在2022年奥密克戎出现以来，病毒的变异速率明显加快，这是一种自然现象。</span><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(61, 170, 214); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;">当前流行的奥密克戎变异株有很大的不确定性，不会是新冠病毒的最后一个变异株。</span></strong><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(0, 0, 0); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;">如，BF.7亚分支是BA.5.2.1.7的缩写，本质上是奥密克戎BA.5变异株的进化分支，和其他的奥密克戎进化分支刚出现时非常相似，都是呈现出较强传播能力，但在致病力方面没有明显改变，也就是致病力没有明显增强。</span></p><p style="margin-top: 16px; margin-bottom: 15px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(0, 0, 0); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;">最新变异株的传播能力，相比其他进化分支确实有所增强，且传播速度快、传播范围广，病毒载量相对较高。</span><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(61, 170, 214); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;">新的病毒进入体内后，人体来不及反应就会有极强的免疫逃逸能力。</span></strong><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(0, 0, 0); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;">“免疫逃逸”是指病毒发生变异后，通过接种疫苗产生抗体对病毒的综合作用会有所减弱。最新变异株在诱病方面与奥密克戎其他毒株基本相似，会在人群里快速传播感染，成为出现重症甚至死亡的诱因。</span></p><p style="margin-top: 16px; margin-bottom: 15px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(0, 0, 0); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;">在这种情况下，</span><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(61, 170, 214); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;">坚持现有防控策略，坚持“动态清零”总方针，近三年防控证明是有效的、可行的、科学的，</strong></span><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(0, 0, 0); visibility: visible; box-sizing: border-box !important; overflow-wrap: break-word !important;">面对不确定性，就应该用确定性的策略、确定性的方针来对抗。</span></p></section></section></section></section></section></section><p><br/></p><section style="max-width: 100%; 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font-family: -apple-system-font, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif;">来源</span><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(136, 136, 136); letter-spacing: 0.544px; overflow-wrap: break-word !important; box-sizing: border-box !important;">：<span style="font-family: Helvetica Neue, Helvetica, Hiragino Sans GB, Microsoft YaHei, Arial, sans-serif;">湖北疾控</span></span><br style="overflow-wrap: break-word;"/></p><p style="margin: 0cm 0cm 0.0001pt; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; font-size: 17px; letter-spacing: 0.544px; font-family: -apple-system-font, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; line-height: normal; overflow-wrap: break-word !important; box-sizing: border-box !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; 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