陕西省脊髓灰质炎病毒学监测20年

Twenty-year Surveillance on Virology of Poliomyelitis in Shaanxi Province

陕西省 1979～ 1999年连续 2 0余年进行了脊髓灰质炎 (脊灰 )病毒学监测 ,共分离出脊灰Ⅰ型野病毒 15 1株 ,分别在 8个年度分布于 8个地区 (市 )的 34个县 (区、市 ) ,其中 1980～ 1983年有 2次脊灰局部流行 ,1990年发生全省流行 ,形成了周至县等 10个主要疫区。 1995年以后全省 15岁以下儿童非脊灰急性弛缓性麻痹病例报告发病率>1/10万 ,周至县等 10个疫区也在 1997年后达到或接近 1/10万。自 1993年以来陕西省未发现脊灰野病毒 ,说明已无野病毒循环。

From 1979-1999,a total of 151 type Ⅰ wild-type polioviruses had been isolated in Shaanxi ProvinceThese viruses distributed in 34 counties (district,city)of 8 prefecturesDuring this period,there were two local outbreaks in 1980-1983 and one provincial epidemic in 1990 that formed 10 epidemic areas like Zhouzhi County, etc. After 1995, the virological surveillance rate in the province for AFP cases was >1/100,000 and that in 10 epidemic areas reached 1/100,000 after 1997 No poliovirus was found since 1993, this indicated that there was no circulation of wild-type poliovirus in nature