摘要
目的 调查2012年北京市常住人口脊髓灰质炎病毒抗体水平。方法 2012年在北京市采用分层随机抽样方法,调查连续居住6个月以上的健康居民1676名。使用调查问卷收集人口学特征、脊髓灰质炎减毒活疫苗(OPV)免疫史等信息,并采集静脉血5ml,使用微量中和试验方法检测脊髓灰质炎病毒中和抗体。对不同组别问抗体阳性率和几何平均滴度(geometric mean titer,GMT)进行比较。结果脊髓灰质炎病毒Ⅰ、Ⅱ、Ⅲ型抗体阳性率分别为98.2%(1645/1676)、98.1%(1644/1676)、97.6%(1635/1676),抗体GMT分别为l:130.2、1:113.4、1:79.7。〈15岁年龄组Ⅰ、Ⅱ、Ⅲ型抗体阳性率分别为99.7%(664/666)、99.8%(665/666)、99.5%(663/666),均高于≥15岁各年龄组[分别为97.1%(981/1010)、96.9%(979/1010)、96.2%(972/1010)],差异有统计学意义(P值均〈0.01);〈15岁年龄组Ⅰ、Ⅱ、Ⅲ型抗体GMT(1:325.9、1:250.5、1:190.7)均高于≥15岁年龄组(1:71.1、1:67.2、1:44.8),差异有统计学意义(P值均〈0.01)。免疫史信息来自于接种证和接种卡的人群各型抗体阳性率(99.O%~100%)和GMT水平(1:128.8~1:300.7)均较高,当记录中免疫次数达到3次时,Ⅰ、Ⅱ、Ⅲ型抗体阳性率(均为100%)和GMT(1:409.7~1:636.7)均达到较高水平。结论2012年北京市健康人群脊髓灰质炎病毒抗体水平处于较高水平;特别是15岁以下免疫覆盖人群,建立了稳固的免疫屏障,可有效阻断输入性脊髓灰质炎野病毒及疫苗衍生病毒的传播。
Objective To analyze the polio immunity level of persistent population in Beijing, 2012. Methods A total of 1 676 subjects residing more than 6 months in Beijing were selected by stratified random cluster sampling design in 2012. Demographic characteristics, history of oral poliovirus vaccine (OPV) immunization were investigated by questionnaire. All 5 ml blood sample were collected for testing of polio neutralizing antibody using the method of microcell neutralization. The positive rate and the geometric mean titer (GMT) of polio neutralizing antibody type Ⅰ、Ⅱ、and Ⅲ were analyzed in different groups. Results The positive rate of type Ⅰ、Ⅱ and Ⅲ were 98. 2% ( 1 645/1 676), 98. 1% ( 1 644/ 1 676 ) ,97. 6% ( 1 635/1 676) ; The GMT were 1 : 130. 2,1 : 113.4 and 1 : 79. 7. Three types of positive rates in 〈 15 years group(99. 7% (664/666) ,99. 8% (665/666) ,99.5% (663/666)) were higher than those of I〉15 years group (97. 1% (981/1 010) ,96. 9% (979/1 010) ,96. 2% (972/1 010) ) ,the differences were significant( all the values of P 〈 0. 01 ) ; The GMT in 〈 15 years group ( 1 : 325.9,1 : 250. 5,1 : 190. 7 ) werehigher than that of ≥ 15 years group ( 1:71.1,1: 67.2,1:44. 8 ), the difference was significant (all the values of P 〈 0. 01 ). The positive rate ( 99.0% -100% ) and GMT ( 1 : 128.8-1 : 300. 7 ) in vaccination information confirmed population were higher. The highest positive rate ( all were 100% ) and GMT( 1 : 409.7-1 : 636. 7 ) were observed in children who vaccinated three times. Conclusion The polio antibody of healthy population was at a high level in Beijing in 2012; Especially the age groups of 〈 15 years which were covered by vaceines. Immunization barrier had been formed firmly to interrupt the transmission of wild poliovirus and vaceine-derived poliovirus.
出处
《中华预防医学杂志》
CAS
CSCD
北大核心
2014年第9期762-765,共4页
Chinese Journal of Preventive Medicine
基金
基金项目:北京市优秀人才培养资助项目(2011D003034000008)