Hepatitis E virus genotype 3 in wild rats, United States.

Hepatitis E virus genotype 3 in wild rats, United States.
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DOI:
10.3201/eid1808.120070
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发表时间:
2012-08
影响因子:
11.8
通讯作者:
Van Den Bussche RA
Van Den Bussche RA
中科院分区:
医学2区
文献类型:
--
作者:
Lack JB;Volk K;Van Den Bussche RA

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感染这种病毒的啮齿动物可能对公共健康构成严重威胁。啮齿动物在人畜共患戊型肝炎病毒(HEV)感染流行病学中的作用一直是一个备受争议的话题。血清阳性率研究表明共生鼠属中存在广泛的 HEV 感染。大鼠,但实验传播基本上不成功,并且从野生黄鼠属中恢复了人畜共患基因型 3 HEV RNA。老鼠从未得到证实。我们使用半巢式逆转录 PCR 方法对来自美国各地和几个国际种群的家鼠和褐家鼠进行了调查。我们从 446 只大鼠中的 35 只的肝组织中分离出 HEV RNA。除 1 株外,所有这些分离株均归入人畜共患 HEV 基因型 3,其余序列代表最近发现的来自美国和德国的大鼠基因型。在城市和边远地区均发现了HEV阳性大鼠。遗传分析表明所有 HEV 基因型 3 分离株均从野生黄鼠属中获得。老鼠关系密切。
Rodents infected with this virus may be a serious threat to public health. The role of rodents in the epidemiology of zoonotic hepatitis E virus (HEV) infection has been a subject of considerable debate. Seroprevalence studies suggest widespread HEV infection in commensal Rattus spp. rats, but experimental transmission has been largely unsuccessful and recovery of zoonotic genotype 3 HEV RNA from wild Rattus spp. rats has never been confirmed. We surveyed R. rattus and R. norvegicus rats from across the United States and several international populations by using a hemi-nested reverse transcription PCR approach. We isolated HEV RNA in liver tissues from 35 of 446 rats examined. All but 1 of these isolates was relegated to the zoonotic HEV genotype 3, and the remaining sequence represented the recently discovered rat genotype from the United States and Germany. HEV-positive rats were detected in urban and remote localities. Genetic analyses suggest all HEV genotype 3 isolates obtained from wild Rattus spp. rats were closely related.
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