摘要
目的调查天津市继康人群肠道病毒71型（EV71）隐性感染状况。方法采集1611名天津市健康人静脉血标本进行EV71中和抗体测定，对检测结果进行分析。结果以抗体滴度1：4作为临界值，调查对象EV71巾和抗体阳性率为66．79％（1076／1611），0～5岁年龄组的抗体阳性率最低为32．71％，16～25岁年龄组的抗体阳性率最高为76．67％，不同年龄组的抗体阳性率差异有统计学意义。市内六区EV71的抗体阳性率最低为59．05％，远郊五县的抗体阳性率最高为72．35％；不同区域间的抗体阳性率差异有统计学意义。EV71抗体滴度≥1：256的人数占5．71％。经logistic回归分析，年龄、流动人口数量和区域都是影响EV71抗体阳性率的因素。结论年龄的增长增加了EV71隐性感染的机会，但抗体水平不可能持久保持；流动人口较多、卫生条件差的地区应作为手足口病防控的重点。
Objective To investigate the latent infection caused by enterovirus 71 （EV71） among healthy people in Tianjin and to provide evidence on prevention and control hand-food and mouth diseases （HFMD）. Methods 1611 sera specimens were collected from healthy people in Tianjin while EV71 antibody was detected by neutralization test, and then the results were analyzed statistically. Results For determining positivity, the cut-point was set at 1：4. The positive rate was 66.79% （1076/1611） for EV71 neutralizing antibody. The lowest positive rate was 32.71% in the 0-5 age group while the highest rate was 76.67% in the 16-25 age group. Significant difference was seen in the positive rates among different age groups. The lowest positive rate （59.05%） was seen in the city areas while the highest rate （72.35%） was seen in the surrounding counties. 5.71% of the people being tested showed their neutralizing antibody as ≥ 1：256. The difference was statistically significant on positive rates among different areas. We constructed logistic regression models with the EV71 neutralizing antibody positive rate as the dependent variable and age, sex, floating population, area etc. as independent variables. There appeared statistical significances in all the independent variables. Conclusion Age seemed a risk factor for recessive infection of EV71, and the neutralizing antibody against EV71 might not be kept permanently. In order to prevent and control the HFMD, more attention should be paid to the areas where more floating population were resided.
出处
《中华流行病学杂志》
CAS
CSCD
北大核心
2011年第6期568-570,共3页
Chinese Journal of Epidemiology
