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JID: 人冠状病毒229E和OC43在成年人群的发病率和临床特点相似

2013-09-13 潘风雨无阻 dxy

冠状病毒(CoV)能够在多种哺乳动物(包括人类)中引起疾病,包括呼吸道和胃肠道疾病。在过去的十年里,人们发现CoV NL63和HKU 1是引起呼吸道疾病的原因,并且与229E 和OC43株流行于处于温带地区冬季的人群中。除了能引起上呼吸道疾病以外,这4种病毒株还与全年龄段中的支气管炎、慢性阻塞性肺疾病的急性发作以及肺炎相关。【原文下载】冠状病毒难以从常规组织培养中分离出来,且没有分子诊断试验,大部

冠状病毒(CoV)能够在多种哺乳动物(包括人类)中引起疾病,包括呼吸道和胃肠道疾病。在过去的十年里,人们发现CoV NL63和HKU 1是引起呼吸道疾病的原因,并且与229E 和OC43株流行于处于温带地区冬季的人群中。除了能引起上呼吸道疾病以外,这4种病毒株还与全年龄段中的支气管炎、慢性阻塞性肺疾病的急性发作以及肺炎相关。【原文下载】

冠状病毒难以从常规组织培养中分离出来,且没有分子诊断试验,大部分的感染都无法得到鉴定。大部分关于CoV的临床影响和流行病学描述局限在婴儿和儿童范围内,而关于成人CoV疾病的长期研究为数不多,尚无研究同时评估院外和住院人群的CoV疾病状况。

为了探究和比较CoV病毒株229E和OC43的发病率、临床特点和感染结果,来自罗切斯特医院医学部的Edward E.Walsh和同事进行了一项研究,研究结果发表在2013年8月6日的Journal of Infectious Diseases上。研究发现,人冠状病毒229E和OC43在成年人群中的发病率和临床特点相似。

研究涉及了1999-2003年间冬季急性呼吸疾病检测下的4个大型成人群体,此群体包含了年轻健康成年人、健康老年人、有心肺疾病的高风险成年人以及住院人群,研究者采用实时PCR和血清学实验检测冠状病毒CoV229E和OC43。

研究中共有398例感染CoV,院外人群中的年感染率为2.8%-25%,住院人群的流行率为3.3%-11.1%。尽管229E的无症状性感染和病毒共感染显著比OC43感染常见,但是每一种病毒株的感染发病率相似。虽然不同病毒株的发病率和临床症状相似,但是在住院人群中发现OC43感染者是229E感染者的2倍,意味着OC43感染者更倾向于寻求医学治疗。

总之,CoV感染常见于老年人,并可能引起巨大的医学疾病负担。

原文下载

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    2014-03-10 紫砂壶
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