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20 0 2年 6月 ,从四川省攀枝花市 2例急性弛缓性麻痹 (AFP)病例和 3名密切接触者粪便标本中分离到 5株疫苗重组脊髓灰质炎 (脊灰 )病毒 (VRPV) ,表明VRPV在该地区循环。 2 0 0 2年 8月 ,对云南省与四川省攀枝花市毗邻的 3个地区 (州、市 ,下同 )、5个县 (区、市 ,下同 )开展了AFP病例的主动搜索 ,未发现VRPV引起的病例。但发现AFP病例漏报率达 5 5 32 % ,一些地方常规免疫不落实。针对调查结果 ,2 0 0 2年 10、11月在楚雄、丽江、昭通 3个地区 2 5个县 ,开展了口服脊灰疫苗 (OPV)两轮强化免疫活动 ,报告接种率 >98% ,快速评估调查接种率常住儿童为 96 94 % ,流动儿童为 85 71%。
Five vaccine-recombinant poliovirus (VRPV) isolates were isolated from two acute flaccid paralysis (AFP) cases and three closely contacted stool specimens from Panzhihua City, Sichuan Province in June 20, VRPV circulates in the area. In August 2002, the active search of AFP cases was conducted in three districts (state, city and the same below) and five counties (districts, cities and the same below) in Yunnan Province and Panzhihua City, Sichuan Province. Found cases caused by VRPV. However, a false-positive rate of 5 5 32% was found in cases of AFP, and routine immunization was not implemented in some areas. According to the survey results, two rounds of oral polio vaccine (OPV) intensified immunization activities were conducted in 10, November and November 2002 in 25 counties of Chuxiong, Lijiang and Zhaotong. The reported vaccination rate was> 98% Surveillance coverage The prevalence of resident children was 96.94%, with 85.71% of migrant children.