Abstract: Objective To analyze the epidemiological characteristics and secular trend of other infectious diarrhea (OID) in Dongying City from 2010 to 2023, and provide evidence for OID control and prevention. Methods Through the China Disease Control and Prevention Information System, the data of OID surveillance in Dongying City from 2010 to 2023 was collected. Joinpoint regression model was established to analyze the epidemiological trend of OID. Results A total of 40 973 cases of OID were reported in Dongying City during 2010-2023, and the annual reported incidence rate was 136.86/100 000. The incidence rate was higher in males than in females (P<0.01), and the incidence ratio of male to female was 1.28: 1.00. Cases were reported in all age groups, mainly under 20 years old, with a total of 17 907 cases reported (43.70%). There were two incidence peaks for OID, from June to August in summer and December to January of the following year in winter. Joinpoint regression analysis showed that the reported incidence rate of OID in Dongying City showed an overall upward trend from 2010 to 2023 (AAPC=7.19%, P<0.05), males showed an overall upward trend but without statistical significance (P>0.05), while females showed an overall upward trend with statistical significance (P<0.05). The age group of 0 - <1 showed an overall slowly downward trend (P<0.05), while the age groups of 1 - <5, 5 - <10, 10 - <15, 20 - <25, 25 - <30, 40 - <45, 50 - <55, 60 - <65, 65 - <70, 75 - <80, and 80 - 99 showed an overall upward trend (P<0.05 or P<0.01). Conclusions The incidence of OID in Dongying City from 2010 to 2023 was still at a high level. It is imperative to pay attention to the age group of 0 - <20 years old and control the key seasonal periods, and actively take targeted prevention and control strategies for OID.

Key words: Other infectious diarrhea, Joinpoint regression, Epidemiological trend