Baidu
map

Science :多数SARS-CoV-2变体很少通过次级传播而持续存在

2021-03-14 MedSci原创 MedSci原创

Worldometers世界实时统计数据显示,全球累计确诊新冠肺炎(COVID-19)病例超过1亿2003万例,累计死亡病例超265.8万例。

Worldometers世界实时统计数据显示,全球累计确诊新冠肺炎COVID-19)病例超过1亿2003万例,累计死亡病例超265.8万例。据英国英格兰公共卫生局表示,近期确诊2感染了一种新的变异新冠病毒的病例,该病毒列为受调查的变异新冠病毒,并将之命名为VUI-202103/01(也称作“B.1.324.1”)变异新冠病毒,目前正在对这一新的变异病毒开展调查。

随着全球新冠大流行,病毒突变频现,变异后的病毒有可能变得更具传染性,或者使治疗和疫苗的效力降低。为了更好地了解这些SARS-CoV-2变种所带来的危险,科学家们一直在跟踪并监测病毒变异的频率和传播力度。

近日,发表在Science 杂志上的一项研究,对20203月至6月间的近1400名新冠患者的鼻腔拭子进行了RNA测序,这些患者基本都表现出COVID-19的症状。研究发现,大多数SARS-CoV-2变异体很少通过二次传播持续存在。

研究人员发现,大多数受感染的人只有一个或两个变种,其中大部分无法存活传播给其他人。少数感染者的变异体能够存活传播,不过这些变异体在家庭之间传播的情况非常少。SARS-CoV-2感染的特点是,当病毒载量较高时,宿主内的变体多样性水平较低,传播瓶颈较窄。大多数变异体在传播时要么消失,要么偶尔固定,共享多样性的持久性极低。

研究人员进一步发现,病毒传播性增强型和/免疫逃避型变异可能不常出现,但如果成功传播,则可能迅速传播。研究人员认为,至少在早期感染期间,能够在抗体的攻击下存活下来的变异是相当罕见的,一旦存活下来,病毒变异体确实能进行更强的传播。

研究人员强调,随着疫苗的使用,这种变异将更有可能传播。因此,必须加强监测,以快速识别病毒变异体,以防大肆传播。

原始出处

Katrina A. Lythgoe et al. SARS-CoV-2 within-host diversity and transmission, Science (2021). DOI: 10.1126/science.abg0821

版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1937993, encodeId=d2e0193e99305, content=<a href='/topic/show?id=02de15902d3' target=_blank style='color:#2F92EE;'>#SARS-CoV#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15902, encryptionId=02de15902d3, topicName=SARS-CoV)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6ab940, createdName=hukaixun, createdTime=Thu Jul 15 03:32:03 CST 2021, time=2021-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1321259, encodeId=1012132125908, content=<a href='/topic/show?id=ac0d159007f' target=_blank style='color:#2F92EE;'>#SARS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15900, encryptionId=ac0d159007f, topicName=SARS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8306486, createdName=小刀医生, createdTime=Tue Mar 16 12:32:03 CST 2021, time=2021-03-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1376265, encodeId=de4913e6265af, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Tue Mar 16 12:32:03 CST 2021, time=2021-03-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=948444, encodeId=4706948444e1, content=👍, beContent=null, objectType=article, channel=null, level=null, likeNumber=114, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=64615469039, createdName=ms5000001524855720, createdTime=Mon Mar 15 19:13:41 CST 2021, time=2021-03-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=948202, encodeId=2f979482023e, content=👍, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=fbb05466276, createdName=ms9000000371276704, createdTime=Sun Mar 14 22:27:14 CST 2021, time=2021-03-14, status=1, ipAttribution=)]
    2021-07-15 hukaixun
  2. [GetPortalCommentsPageByObjectIdResponse(id=1937993, encodeId=d2e0193e99305, content=<a href='/topic/show?id=02de15902d3' target=_blank style='color:#2F92EE;'>#SARS-CoV#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15902, encryptionId=02de15902d3, topicName=SARS-CoV)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6ab940, createdName=hukaixun, createdTime=Thu Jul 15 03:32:03 CST 2021, time=2021-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1321259, encodeId=1012132125908, content=<a href='/topic/show?id=ac0d159007f' target=_blank style='color:#2F92EE;'>#SARS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15900, encryptionId=ac0d159007f, topicName=SARS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8306486, createdName=小刀医生, createdTime=Tue Mar 16 12:32:03 CST 2021, time=2021-03-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1376265, encodeId=de4913e6265af, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Tue Mar 16 12:32:03 CST 2021, time=2021-03-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=948444, encodeId=4706948444e1, content=👍, beContent=null, objectType=article, channel=null, level=null, likeNumber=114, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=64615469039, createdName=ms5000001524855720, createdTime=Mon Mar 15 19:13:41 CST 2021, time=2021-03-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=948202, encodeId=2f979482023e, content=👍, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=fbb05466276, createdName=ms9000000371276704, createdTime=Sun Mar 14 22:27:14 CST 2021, time=2021-03-14, status=1, ipAttribution=)]
    2021-03-16 小刀医生
  3. [GetPortalCommentsPageByObjectIdResponse(id=1937993, encodeId=d2e0193e99305, content=<a href='/topic/show?id=02de15902d3' target=_blank style='color:#2F92EE;'>#SARS-CoV#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15902, encryptionId=02de15902d3, topicName=SARS-CoV)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6ab940, createdName=hukaixun, createdTime=Thu Jul 15 03:32:03 CST 2021, time=2021-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1321259, encodeId=1012132125908, content=<a href='/topic/show?id=ac0d159007f' target=_blank style='color:#2F92EE;'>#SARS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15900, encryptionId=ac0d159007f, topicName=SARS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8306486, createdName=小刀医生, createdTime=Tue Mar 16 12:32:03 CST 2021, time=2021-03-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1376265, encodeId=de4913e6265af, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Tue Mar 16 12:32:03 CST 2021, time=2021-03-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=948444, encodeId=4706948444e1, content=👍, beContent=null, objectType=article, channel=null, level=null, likeNumber=114, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=64615469039, createdName=ms5000001524855720, createdTime=Mon Mar 15 19:13:41 CST 2021, time=2021-03-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=948202, encodeId=2f979482023e, content=👍, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=fbb05466276, createdName=ms9000000371276704, createdTime=Sun Mar 14 22:27:14 CST 2021, time=2021-03-14, status=1, ipAttribution=)]
    2021-03-16 jichang
  4. [GetPortalCommentsPageByObjectIdResponse(id=1937993, encodeId=d2e0193e99305, content=<a href='/topic/show?id=02de15902d3' target=_blank style='color:#2F92EE;'>#SARS-CoV#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15902, encryptionId=02de15902d3, topicName=SARS-CoV)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6ab940, createdName=hukaixun, createdTime=Thu Jul 15 03:32:03 CST 2021, time=2021-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1321259, encodeId=1012132125908, content=<a href='/topic/show?id=ac0d159007f' target=_blank style='color:#2F92EE;'>#SARS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15900, encryptionId=ac0d159007f, topicName=SARS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8306486, createdName=小刀医生, createdTime=Tue Mar 16 12:32:03 CST 2021, time=2021-03-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1376265, encodeId=de4913e6265af, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Tue Mar 16 12:32:03 CST 2021, time=2021-03-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=948444, encodeId=4706948444e1, content=👍, beContent=null, objectType=article, channel=null, level=null, likeNumber=114, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=64615469039, createdName=ms5000001524855720, createdTime=Mon Mar 15 19:13:41 CST 2021, time=2021-03-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=948202, encodeId=2f979482023e, content=👍, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=fbb05466276, createdName=ms9000000371276704, createdTime=Sun Mar 14 22:27:14 CST 2021, time=2021-03-14, status=1, ipAttribution=)]
    2021-03-15 ms5000001524855720

    👍

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1937993, encodeId=d2e0193e99305, content=<a href='/topic/show?id=02de15902d3' target=_blank style='color:#2F92EE;'>#SARS-CoV#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15902, encryptionId=02de15902d3, topicName=SARS-CoV)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6ab940, createdName=hukaixun, createdTime=Thu Jul 15 03:32:03 CST 2021, time=2021-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1321259, encodeId=1012132125908, content=<a href='/topic/show?id=ac0d159007f' target=_blank style='color:#2F92EE;'>#SARS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15900, encryptionId=ac0d159007f, topicName=SARS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8306486, createdName=小刀医生, createdTime=Tue Mar 16 12:32:03 CST 2021, time=2021-03-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1376265, encodeId=de4913e6265af, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Tue Mar 16 12:32:03 CST 2021, time=2021-03-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=948444, encodeId=4706948444e1, content=👍, beContent=null, objectType=article, channel=null, level=null, likeNumber=114, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=64615469039, createdName=ms5000001524855720, createdTime=Mon Mar 15 19:13:41 CST 2021, time=2021-03-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=948202, encodeId=2f979482023e, content=👍, beContent=null, objectType=article, channel=null, level=null, likeNumber=126, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=fbb05466276, createdName=ms9000000371276704, createdTime=Sun Mar 14 22:27:14 CST 2021, time=2021-03-14, status=1, ipAttribution=)]
    2021-03-14 ms9000000371276704

    👍

    0

相关资讯

为什么新冠病毒比普通流感病毒更容易“超级传播”

新冠病毒从口鼻喷出,可迅速扩散至整个房间,散落于物体表面,若潜进不通风的室内,能在空气中存活数小时。在最凶猛的“超级传播”中,新冠病毒可以穿越拥挤的人群,一次性感染数十甚至上百

美媒:美国高达59%的新冠病毒传播由无症状感染者引起

据《今日美国》当地时间1月8日报道,美国疾控中心研究人员开发的最新模型显示,美国高达59%的新冠病毒传播由无症状感染者引起。

NATURE:我国研究人员对武汉新冠传播进行全面动态重构 

研究人员进一步探讨了14天无确诊感染后解除所有干预措施后的复发概率,根据87%和53%无确诊感染的模型分别估计为0.32和0.06,凸显了无确诊病例在改变干预策略时带来的风险。

Sci Rep:蚊子能够传播新冠病毒吗?研究证实并不会!

随着夏天的到来,气温逐渐升高,蚊子开始肆虐。蚊子是流行性乙脑、疟疾、登革热、黄热病等众多传染病的传播媒介之一,很多人因此联想到蚊子会不会传播新冠病毒。

警惕!多地发现“复阳”患者,是否会造成传播?

接连报道的新冠肺炎康复患者复阳,让国内疫情稍微平静的局面,骤起波澜。

Science:重磅:极大关注,首次发现动物可将新冠病毒传播给人类

动物实验表明,非人类灵长类动物,猫,雪貂,仓鼠,兔和蝙蝠可被SARS-CoV-2感染。此外,在野外还发现了猫,貂和狗的SARS-CoV-2 RNA。

Baidu
map
Baidu
map
Baidu
map