2011-2017年苏州市区5岁以下儿童流感相关门诊就诊率的估计

The estimation of influenza-related outpatient rate in children under 5 years in Suzhou from 2011 to 2017

目的估计2011-2017年苏州市区5岁以下儿童流感相关流感样病例(influenzalike illness,ILI)就诊率。方法 2011年10月～2017年3月,在苏州大学附属儿童医院门急诊室开展对5岁以下儿童ILI病例的监测。收集咽拭子标本并采用实时定量逆转录-聚合酶链反应进行流感病毒检测。同时基于卫生服务利用数据及人口学数据,估计苏州市区5岁以下儿童流感相关ILI就诊数和就诊率。结果 2011-2017年苏州市区约有45 930例次5岁以下流感相关ILI病例,其中因流感病毒A/H1N1感染就诊的ILI病例7 490例,A/H3N2就诊数为17 843例,B就诊数为20 597例。研究期间,苏州市区5岁以下儿童流感相关ILI病例的就诊率为6. 4/100人年,其中2011-2012年流感相关ILI就诊率最高,达20. 5/100人年,2012-2013年最低,为2. 4/100人年。结论苏州市区5岁以下的儿童流感相关ILI就诊数和就诊率较高,疾病负担较大。

Objective To estimate the outpatient rate of influenza-related influenza-like illness( ILI) for children younger than 5 years in Suzhou municipal districts. Methods From October 2011 to March 2017,we conducted a prospective surveillance program on ILI for children under 5 years in outpatient settings of Soochow University Affiliated Children’s Hospital( SCH). The throat swabs were collected and tested for influenza viruses by RT-PCR. Based on the healthcare utilization surveys and population data,the number of visits and the outpatient rate of influenza-related ILI for children younger than 5 years in Suzhou municipal districts were estimated. Results During 2011-2017,in total,there were 45 930 estimated influenza-related ILI cases younger than 5 years in Suzhou municipal districts,which consisted of 7 490 influenza A/H1 N1 cases,17 843 influenza A/H3 N2 cases and 20 597 influenza B cases. The estimated outpatient rate of influenza-related ILI was 6. 4% in 2011-2017,which was highest in 2011-2012,20. 5%,and the lowest in 2012-2013,2. 4%. Conclusion The number of visits and the outpatient rate of influenza-related ILI in children younger than 5 years was high in Suzhou municipal districts.