Epidemiological and Etiological Investigation of Other Infectious Diarrhea in Songjiang District of Shanghai from 2018 to 2023

Pan Changhui; Fei Huayuan; Zhu Yinfeng; Wang Qin; Lü Xihong

doi:10.3969/j.issn.1001-568X.2026.01.0014

Abstract：OBJECTIVE To investigate the epidemiological characteristics and etiological patterns of non-statutory notifiable infectious diarrhea in Songjiang District of Shanghai from 2018 to 2023.It aims to offer scientific evidence for optimizing local diarrheal disease control strategies.METHODS Case records of non-specific infectious diarrheal diseases were systematically retrieved from the China Infectious Disease Surveillance Reporting System,a retrospective descriptive analysis was conducted.RESULTS Among 3,366 laboratory-confirmed cases,the crude annual incidence averaged 29.25/100,000 population,demonstrating a significant declining trend(χ2=675.44,P＜0.01).Distinct seasonal patterns emerged:viral agents predominated in colder months(winter-spring),whereas bacterial pathogens demonstrated higher activity in warmer seasons(summer-autumn).Rotavirus accounted for 35.0%of identified pathogens,followed by Salmonella(20.0%).The incidence rate of male was slightly higher than that of female,and children under the age of 6 were the high incidence group(49.5%).In terms of occupation distribution,scattered children,school and nursery children are the main groups,and the incidence rate in urban streets was higher.The annual incidence rate of each street and town was statistically different(χ2=300.38,P＜0.01).CONCLUSION From 2018 to 2023,other infectious diarrhea outbreaks in Songjiang District generally showed a downward trend,with seasonal and regional high incidence.Children aged 0-6 years are the most susceptible population.It is suggested to strengthen health education for key populations and regions,improve the completeness of pathogen surveillance and reporting,so as to reduce the incidence.