科学家发现3株新型诺如病毒,可造成肠道流行性疾病

2016-09-19 佚名 生物谷

(图片摘自www.sciencealert.com)澳大利亚科学家最近发现了三株新型的诺如病毒毒株,他们认为这几株病毒是造成最近几个月来病毒性肠胃炎的罪魁祸首。这次疫情子啊最严重的时候,其病例数量甚至超过了高峰时期的流感病毒。诺如病毒是一类由单链RNA编码的病毒,它能够造成呕吐,腹泻,恶心,以及短暂的味觉失灵。诺如病毒能够通过气溶胶颗粒以及被感染的粪便传播,它们在这些污染源表面停留的时间长达一周。


(图片摘自www.sciencealert.com)

澳大利亚科学家最近发现了三株新型的诺如病毒毒株,他们认为这几株病毒是造成最近几个月来病毒性肠胃炎的罪魁祸首。

这次疫情子啊最严重的时候,其病例数量甚至超过了高峰时期的流感病毒。

诺如病毒是一类由单链RNA编码的病毒,它能够造成呕吐,腹泻,恶心,以及短暂的味觉失灵。

诺如病毒能够通过气溶胶颗粒以及被感染的粪便传播,它们在这些污染源表面停留的时间长达一周。

全球范围内该病毒已经感染了2.67亿人口,每年因此丧生的人有约20万。主要感染免疫系统衰弱的患者群体,例如小孩与老人。

2012年,来自新南威尔士大学的研究者们发现了一株新型的诺如病毒,他们将其命名为"Sydney 2012",该毒株曾造成了全球范围内的疾病。

"过去二十年来,诺如病毒曾经造成了6次全球性的流行性疫情,分别在1996,2002,2004,2006,2009,2012"。

然而,今年澳大利亚的诺如病毒感染病例中该毒株的百分比从75%下跌至18%,美国与新西兰等地也有相似的现象。

进一步,研究者们发现了三种与以往不同的诺如病毒毒株。

"其中两株病毒是Sydney 2012毒株演化而来的,而剩下一株则是从亚洲传播而来"。

根据研究者们的说法,大多数由诺如病毒引发的疫情都发生于医院,养老院,托儿所以及巡航船等地。

"上述三种病毒是过去几个月来发生于澳大利亚的大规模流行性疾病的主要元凶,而且曾经受到流感病毒侵染的高危区域也更容易受到诺如病毒的感染"。

由于上述研究仍没有发表,因此对于这些新型诺如病毒的具体特征我们只能等待。不过,研究者们将会与当地的监督机构以及下属的实验室开展合作,以至于追踪这些新型毒株的传播方式。

原始出处:

Scientists discover 3 new strains of norovirus that are causing gastro outbreaks

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    2016-11-25 tulenzi
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    2016-10-10 1e0d99ddm02(暂无匿称)

    总结的很好!

    0

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    2016-10-10 1e0d99ddm02(暂无匿称)

    分享一下!

    0

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    2016-09-23 187清风

    厉害,学习了

    0

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    2016-09-23 187清风

    厉害,学习了

    0

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    2016-09-23 187清风

    注意预防

    0

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