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青海省 1999年 10月发生了输入性脊髓灰质炎 (脊灰 )野病毒引起的病例后 ,为阻断脊灰野病毒传播 ,开展了10次应急免疫、“扫荡”式免疫和周边地区强化免疫活动。为了解其效果 ,采用对比分析方法进行评价。结果显示 :“扫荡”式免疫活动各年龄组服苗人数均高于统计局人数 ;与 1994/1995年强化免疫的同一出生队列相比 ,3个出生队列人数分别增加 2 7 91%、11 5 9%、6 94% ,1个队列人数减少 2 45 % ;“扫荡”式免疫与强化免疫发现“零”剂次免疫儿童数是历次免疫活动中最多的 ,两次“扫荡”式免疫“零”剂次儿童数相比下降 6 18% ,表明“扫荡”式免疫和强化免疫效果显著。经近两年急性弛缓性麻痹 (AFP)病例流行病学和病毒学监测未发现脊灰病例和野病毒 ,表明免疫活动达到了阻断脊灰野病毒传播的目的。
After the cases caused by imported poliovirus (poliovirus) occurred in Qinghai Province in October 1999, 10 emergency immunizations, “mopping-up” immunizations and intensified immunization activities in the surrounding areas were carried out in order to stop the spread of poliovirus . In order to understand its effect, using comparative analysis method to evaluate. The results showed that: the number of “mopping-up” immunization activities in all age groups was higher than that of the statistical bureau; the number of three birth cohorts increased by 2 7 91% and 11 5 respectively compared with the same birth cohort of intensive immunization in 1994/1995 9% and 694% respectively, and the number of one cohort decreased by 2 45%. The numbers of “zero” dose-immunized children who were found to have “mopping up” and “intensifying immunity” were the highest among immunization activities in the past, and the number of “mopping-up” The number of children in the dose group decreased by 6 18%, indicating that the “mopping-up” type of immunity and the intensive immunization are effective. Poliovirus and wild virus were not detected in the epidemiological and virological monitoring of acute flaccid paralysis (AFP) cases in recent two years, indicating that the immunization activities have blocked the transmission of poliovirus.