Epidemiological and etiological characteristics of hand, foot and mouth disease in Sichuan Province, 2009-2016
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摘要: 目的 分析2009-2016年四川省手足口病的流行特征,为手足口病的科学防治提供依据。方法 从《疾病监测信息报告管理系统》中获取2009-2016年所有手足口病个案资料,采用描述性流行病学方法分析。结果 2009-2016年四川省累计报告手足口病467 714例,年均发病率为71.95/10万,累计报告重症病例4 110例,占报告病例总数的0.88%,死亡病例161例,总病死率为0.034%。发病年龄主要分布在≤ 5岁儿童,占病例总数的93.04%;男女性别比为1.49:1。病例以散居儿童为主,占病例总数的63.34%。全年有两个发病高峰,春夏高峰为4~7月,秋冬高峰为11月。重症病例多发于4~7月。地区间发病水平差异明显,成都平原及周边地区发病率和病例数均高于全省其他地区。实验室确诊病例31 116例,病原学构成中柯萨奇病毒A16型(coxsackie virus A16,CoxA16)占25.95%,肠道病毒71型(enterovirus type 71,EV71)占29.27%,其他肠道病毒占44.78%。结论 四川省手足口病流行强度大、地理分布范围广、流行持续时间长,应坚持做好病原学监测,加强重点人群和重点地区的防控工作。Abstract: Objective To analyze the epidemic characteristics of hand foot and mouth disease(HFMD) in Sichuan Province from 2009 to 2014 and provide evidence for prevention and control. Methods A descriptive analysis was conducted by downloading the case-data of HFMD in Sichuan Province from 2009 to 2014 from the chinese national notifiable infectious disease reporting system. Results A total of 467 714 cases of HFMD were reported from 2009 to 2016, including 4 110 severe cases and 161 deaths. The average annual incidence rate was 71.95/100 000, the severe cases rate and fatality rate were 0.88% and 0.034%. Cases in children aged 5 or younger accounted for 93.04%. Boys had higher incidence than girls(1.49:1).The scattered children accounted for 63.34%. Two peaks of incidence were observed every year, with the highest occurring between April and July and the second occurring in November. The peak of severe cases was observed from April to July. The incidence in Chengdu plain and its surrounding areas were significantly higher than other regions. A total of 31 116 cases were laboratory confirmed cases, with coxsachie virus A16 (CoxA16) accounting for 25.95%, enterovirus 71 (EV71) accounting for 29.27% and other enteroviruses 44.78%. Conclusions HFMD in Sichuan Province had strong epidemic intensity, wide geographical distribution and long duration. It is necessary to monitor the pathogenic changes and strengthen the measures to prevention and control occurrence in the high risk population and areas.
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