Journal of Tropical Diseases and Parasitology ›› 2025, Vol. 23 ›› Issue (1): 17-23.doi: 10.20199/j.issn.1672-2302.2025.01.004

• TOPICS ON OTHER INFECTIOUS DIARRHEA PREVENTION AND CONTROL • Previous Articles     Next Articles

Trends and spatiotemporal aggregation analysis of other infectious diarrhea in Wuhu City from 2005 to 2023

LI Yong1(), WANG Fei1, AN Zhou1, TONG Fei1, YE Qin1, HUANG Yuee2()   

  1. 1. Wuhu Center for Disease Control and Prevention,Wuhu 241000,Anhui Province,China
    2. Wannan Medical College
  • Received:2024-06-12 Online:2025-02-20 Published:2025-04-03
  • Contact: HUANG Yuee E-mail:616696762@qq.com;huangyewindow@163.com

Abstract:

Objective To investigate the epidemiological characteristics, incidence trend and spatiotemporal aggregation of other infectious diarrhea in Wuhu City for scientific evidence in prevention and control of this intestinal infection. Methods The case data of other infectious diarrhea reported in Wuhu City from 2005 to 2023 were obtained through the Chinese Disease Prevention and Control Information System. Descriptive epidemiological methods were used to analyze the temporal, regional and population distribution of the infections. Joinpoint regression model was used to analyze the trend change of incidence, and spatial-temporal scan analysis was performed to identify the characteristics of spatiotemporal aggregation. Results From 2005 to 2023, a total of 97 325 cases of other infectious diarrhea, including one death, were reported in Wuhu area. The incidence was 159.37 per 100 000 population. Of these, 52 264 cases were males, and 45 061 females. The incidence was higher in males than in females (167.74/100 000 vs. 150.64/100 000). The number of reported cases (n=29 762, 30.58%) and incidence (1 015.28/100 000) were the highest in the 0-4 age group. By occupation distribution, the highest proportion was seen children living at home (n=27 496, 28.25%) and farmers (n=22 836, 23.46%). By temporal distribution, the infection was unimodal in general between 2005 and 2012, with a peak from July to September (n=7 590, 36.88%), yet presented with bimodal type from 2013 to 2023, with a main peak from June to August (n=26 311, 34.28%) and a secondary peak from January to March (n=16 633, 21.67%). By regional distribution, the highest number of cases was reported in Jiujiang District (n=18 202), and the highest annual incidence was found in Fanchang District (362.15/100 000). Joinpoint regression analysis showed that the reported incidence of other infectious diarrhea in Wuhu City from 2005 to 2023 had an overall increasing trend (AAPC=13.35%, t=3.24, P<0.01), during which rapid increase was seen from 2005 to 2008 (APC=68.37%, t=2.27, APC=13.35%, P<0.01) and slow increment was found from 2008 to 2023 (APC=4.73%, t=6.12, P<0.001). Spatial-temporal scan analysis showed that other infectious diarrhea in Wuhu area was in obvious spatial and temporal aggregation, the primary aggregation area was Fanchang District with the clustering period from April 2017 to September 2023 (RR=2.73, LLR=2 707.39, P<0.001). Conclusion From 2005 to 2023, the incidence of other infectious diarrhea in Wuhu City was higher and tended to climb. Summer is the main peak of the epidemic and most of the infections occurred in population aged 0-4 years. Children living at home and farmers are the groups of high risks, and Fanchang District was the highest incidence area. Our findings suggest that it is necessary to formulate prevention and control strategies for the key areas and population groups, strengthen health education and improve awareness of disease prevention.

Key words: Other infectious diarrhea, Epidemiological characteristic, Spatiotemporal aggregation, Joinpoint regression model, Wuhu City

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