Journal of Tropical Diseases and Parasitology ›› 2023, Vol. 21 ›› Issue (1): 7-12.doi: 10.3969/j.issn.1672-2302.2023.01.002

• SPECIALARTICLES FOR OTHER INFECTIOUS DIARRHEA • Previous Articles     Next Articles

Epidemiological characteristics of other infectious diarrhea in Sichuan Province from 2017 to 2021

HAO Cai-xia(), LIU Ya-qiong(), LIAO Xue-chun, YUAN Heng   

  1. Institute for Acute Infectious Diseases Control and Prevention, Sichuan Center for Disease Control and Prevention, Chengdu 610041, Sichuan Province, China
  • Received:2022-12-30 Online:2023-02-20 Published:2023-02-28

Abstract:

Objective To analyze the epidemic characteristics and the pathogen of other infectious diarrhea in Sichuan Province from 2017 to 2021 for scientific basis for epidemic prevention and control of the infection. Methods The data on the reported cases of other infectious diarrhea for Sichuan Province were collected through the Infectious Disease Surveillance System under the Chinese Disease Prevention and Control Information System from 2017 to 2021, and analyzed using descriptive epidemiology. Results In total, 210 677 cases of other infectious diarrhea were reported in Sichuan Province from 2017 to 2021, with an average annual reported incidence of 50.60/100 000. The annual reported incidence rate was between 42.87/100 000 and 67.71/100 000, and the reported incidence rate showed an overall upward trend (χ2trend=4 926.705, P<0.001). The number of cases reported was 113 661 for men and 97 016 for women, and the average annual reported incidence was 53.49/100 000 and 46.76/100 000, respectively. For all age groups, children under 2 years old were most reported, accounting for 51.52% of the total cases (108 537/210 677). By different occupational group, the number of cases was the largest in children living in diaspora, accounting for 63.15% of the total cases (133 037/210 677). Other infectious diarrhea peaked in winter and in summer in Sichuan Province, with climax from July to September and from December to January of the next year. The infections were reported in all 21 cities (prefectures) in Sichuan Province. Average annual reported incidence was between 22.60/100 000 and 70.16/100 000 for each city (prefecture). There were 22 541 cases with definite etiological diagnosis, including 20 901 cases of viral diarrhea, 1 625 of bacterial diarrhea and 15 of fungal diarrhea. In the cases of viral diarrhea, rotavirus infection accounted for 88.64% (18 526/20 901). A total of 20 outbreaks were reported in Sichuan Province from 2017 to 2021, in which 19 cases were associated with norovirus infection and 1 with rotavirus and norovirus co-infection. Conclusion The reported incidence rate of other infectious diarrhea in Sichuan Province is increasing year by year. Scattered children under 2 years old should be the key population for prevention and control, and rotavirus is the main pathogen. The findings suggest that attention should be paid to active surveillance, prevention and control of other infectious diarrhea.

Key words: Other infectious diarrhea, Epidemiology, Pathogen, Sichuan Province

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