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1999年 10月青海省循化撒拉族自治县发生 1例由输入性脊髓灰质炎 (脊灰 )野病毒引起的病例 ,此病例的发生主要是该县口服脊灰疫苗 (OPV)常规免疫接种率处于低水平 ,OPV强化免疫质量差 ,在较大范围内形成免疫空白人群所致。该县自1992年建立急性弛缓性麻痹 (AFP)病例监测系统以来 ,监测质量和监测敏感性基本上达到世界卫生组织 (WHO)和卫生部的要求。在OPV“扫荡式”免疫活动中 ,经卫生人员逐户调查 ,发现 1997年 1例AFP病例漏报。同时 ,对全省 47个县 (区 )进行AFP病例主动搜索 ,1996年、 1997年均漏报 2例 ,1998年以来未发现AFP病例漏报
In October 1999, one case of enterovirus poliovirus (poliovirus) occurred in Xunhua Salar Autonomous County of Qinghai Province. The incidence of this case was mainly due to the routine immunization rate of oral polio vaccine (OPV) Low-level, OPV-enhanced immune quality is poor, resulting in a large population of immune blank. Since the county established the acute flaccid paralysis (AFP) case surveillance system in 1992, the monitoring quality and monitoring sensitivity basically met the requirements of the World Health Organization (WHO) and the Ministry of Health. In OPV “mopping-up” immunization activities, a survey conducted by health workers on a household-by-household basis revealed that one case of AFP was underreported in 1997. At the same time, the active search of AFP cases was carried out in 47 counties (districts) across the province, 2 cases were missed in 1996 and 1997, and no case of AFP was reported missing since 1998