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1·VAPP mostly occurred in children< 1 year old after one dose of OPV vaccine.

主要发生在< 1岁儿童，且多为首次服苗后。

2·The OPV also reports that 221 prisoners were murdered in the first six months of this year alone.

OPV还称，仅今年的前六个月，就有221名囚犯被谋杀。

3·In this thesis, some basic research work is carried out based on OEL and OPV characteristics.

本论文基于此开展了一些探讨性的研究工作。

4·A: a vaccine-derived poliovirus (VDPV) is a rare strain of poliovirus, genetically mutated from the strain contained in oral polio vaccine (OPV).

答：疫苗衍生脊髓灰质炎病毒(VDPV)是一种罕见的脊髓灰质炎病毒株，由口服脊髓灰质炎疫苗(opv)里的病毒株遗传变异而来。

5·Henceforth it is advisable to enhance the training force of clinicians at county-level medical facilities to further improve OPV immunization rate.

今后应加大对县级医疗机构临床医生的培训力度，进一步提高OPV免疫接种率。

6·Recognizing the risk of a poliovirus importation and outbreak, Uzbekistan has conducted 4 nationwide OPV campaigns, the last one from 25-31 October.

由于看到了输入脊髓灰质炎病毒以及发生疫情的风险，乌兹别克斯坦已经开展了4次全国性口服脊髓灰质炎疫苗活动，最后一次活动发生在10月25日至31日。

7·In Turkmenistan (three WPV1 cases), no new cases have been reported since 28 June 2010, and four mass OPV immunization campaigns have been completed.

在土库曼斯坦(有3例1型野生脊灰病毒病例)，2010年6月28日以来没有出现新的病例报告，已经完成了四轮大规模口服脊髓灰质炎疫苗免疫接种活动。

8·Travellers from Pakistan should have a full course of vaccination against polio before leaving Pakistan, with a minimum one dose of OPV before departure.

从巴基斯坦出发的旅客应在离开巴基斯坦前完成免疫接种的完整疗程，出发前至少要服用一剂口服脊髓灰质炎疫苗。

9·Travelers from polio-affected areas should have a full course of vaccination against polio before leaving, with a minimum one dose of OPV before departure.

来自受脊髓灰质炎影响地区的旅行者，应在行前获得脊髓灰质炎疫苗完整程序的接种，出发前至少应获得一剂口服脊髓灰质炎疫苗。

10·The need for additional rounds of mass oral polio vaccine (OPV) immunization will be based on an ongoing evaluation of epidemiological and laboratory data.

是否有必要进行更多轮次的口服脊髓灰质炎疫苗大规模免疫接种活动，将以正在进行的流行病学和实验室数据评估情况作为根据。