Analysis on epidemiological characteristics of other infectious diarrhea in Songjiang District of Shanghai City from 2017-2020

Abstract

Abstract: Objective To understand the epidemiological characteristics of other infectious diarrhea in Songjiang District of Shanghai City from 2017-2020,provide a basis for the formulation of scientific prevention and control measures. Methods The surveillance data of other infectious diarrhea in Songjiang District of Shanghai from 2017-2020 were collected from China information system for disease control and prevention. The clusters and outbreaks data were collected from Shanghai Songjiang aggregation epidemic information system. The etiological data were collected from Shanghai diarrhea comprehensive surveillance system. And the data were analyzed. Results From 2017 to 2020,a total of 3 635 cases of other infectious diarrhea were reported in Songjiang District of Shanghai with an average annual incidence rate of 51.56/100 000,and the difference in the incidence rate among different years was statistically significant（χ²=543.072,P<0.01）. The vast majority occurred in age group of <5（55.90%） and 20-<40（14.97%） years old,with a total sex ratio of 1.25∶1. The incidence presented a bimodal distribution,with the major peak between December and March and the minor peak between August and September. The cases were reported in all streets and towns,mainly concentrated in Fangsong Street（22.72%）,Yueyang Street（9.71%） and Yongfeng Street（9.11%）. A total of 79 clusters and 14 outbreaks were reported. Norovirus was the most common pathogen,with a peak in November-December,mainly occurred in kindergartens（48.61%） and elementary school（23.61%）. A total of 6 757 cases were monitored in the adult diarrhea comprehensive surveillance. The pathogen monitoring was performed among 879 cases,and 355 cases were positive for bacteria or virus. The bacteria infection was commonly seen from May to September,which was mainly caused by Vibrio parahaemolyticus and Campylobacter. The virus infection was commonly seen from October to April,which was mainly caused by norovirus and rotavirus. Conclusion The majority of other infectious diarrhea are scattered children and young adults in Songjiang District of Shanghai from 2017-2020,the obvious seasonal characteristics are showed with the bacteria peak in summer and virus peak in winter,and highly targeted prevention and control measures should be taken in different seasons for high-risk populations and places with a high incidence of clusters or outbreaks.

Key words: Other infectious diarrhea, Epidemiological characteristics, Etiological, Clusters

CLC Number:

R181.8⁺1

LI Meng, QIAO Xue-fei, LYU Xi-hong, SUN Zhong-xing, GAO Gui-ling. Analysis on epidemiological characteristics of other infectious diarrhea in Songjiang District of Shanghai City from 2017-2020. [J]OCCUPATION AND HEALTH, 2023, 39(4): 492-496.

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