2013-2017年中山市其它感染性腹泻病流行病学特征分析

Epidemic characteristics of other infectious diarrhea in Zhongshan city from 2013 to 2017

目的了解中山市其它感染性腹泻病流行病学特征及暴发疫情发生规律。方法对2013-2017年期间报告的中山市其它感染性腹泻病病例及暴发疫情进行描述性分析。结果2013-2017年共报告中山市其它感染性腹泻病病例32831例,暴发疫情11起,无死亡病例报告。其它感染性腹泻病年均发病率为205.33/10万,发病最高峰在12月和1月;男性发病率高于女性;以3岁以下散居儿童为主。确诊病例占总病例数的39.47%(12959/32831);病原构成以轮状病毒为主63.99%(8293/12959)。感染性腹泻暴发疫情集中在1-2月,累计报告病例数470人,总罹患率为3.95%(470/11888),发生场所主要为托幼机构和学校,以学生和幼托儿童为主,病原体均为诺如病毒GII型。结论其它感染性腹泻病发病最高峰较往年有所推移,病原体以轮状病毒为主,应重点关注3岁以下人群。暴发疫情集中在冬春季,病原体为诺如病毒GII型,应重视学校及托幼机构等集体单位疫情的早期发现。

Objective To understand the epidemiological characteristics and outbreak epidemic regularity of other infectious diarrhea in Zhongshan city.Methods Descriptive analysis was conducted on the cases and outbreaks of other infectious diarrhea reported in Zhongshan city from 2013 to 2017.Results A total of 32831 cases of other infectious diarrhea and 11 outbreaks were reported in Zhongshan city.No deaths had been reported.The average annual incidence rate of other infectious diarrhea was 205.33/100000.The peak season was in December and January.The incidence rate of male was higher than that of female.Most of them were scattered children under 3 years old.The laboratory confirmed cases accounted for 39.47%of the total reported cases(12959/32831),and the cases of rotavirus infection accounted for 63.99%of the laboratory confirmed cases(8293/12959).Outbreaks of infectious diarrhea were concentrated in January and February.A total of 470 cases had been reported,with a total attack rate of 3.95%(470/11888).Outbreaks mainly happened in kindergarten and schools,mainly amount students and kindergarten children.The pathogen was norovirus GII.Conclusions The peak season of other infectious diarrhea had changed from previous years;the pathogen was mainly rotavirus.The outbreak was concentrated in winter and spring,and the pathogen was norovirus GII.Prevention and control measures should focus on the population under the age of 3 and pay attention to the early detection of outbreaks in schools and child care institutions.