Abstract:

Objective To analyze the epidemic pattern and characteristics of other infectious diarrhea in Kunming area, and propose targeted prevention and control measures according to the epidemic regularity and characteristics, so as to provide theoretical support for adjusting prevention and control strategies by the health administration sections. Methods The data on the reported cases of other infectious diarrhea and public health emergencies in Kunming were collected through the Chinese Disease Prevention and Control Information System from 2017 to 2021, and described in accordance with the three-distribution and pathogenic classification. Results In total, 58 909 cases of other infectious diarrhea were reported in Kunming area from 2017 through 2021. No deaths were reported. Annual average reported incidence was 156.90/100 000, and annual reported incidence rate was 123.66/100 000-194.03/100 000. The number of reported cases showed seasonal peaks, primarily occurring in winter (December-January). The top 5 areas by average annual reported incidence were Anning City (226.65/100 000), Wuhua District (210.63/100 000), Jinning District (185.68/100 000), Shilin County (180.08/100 000) and Panlong District (174.33/100 000). Of the reported cases, 31 559 were males (53.57%), and 27 350 females (46.43%). By different age group, the population under 5 years of age was the highest in the cases reported, which accounted for 68.02% (40 067/58 909). Among different occupations, the number of cases reported was the highest 65.47% (38 566/58 909) for children of scattered living. The incidence of viral diarrhea was 99.38% (10 205/10 269) in the diseases with clear etiology, in which rotavirus infection accounted for 94.06% (9 659/10 269). Eight other infectious diarrhea events were reported in the city from 2017 to 2021, of which 7 occurred in schools and nurseries. The total attack rate was 0.86%. Of the 7 events with clear etiology, 6 were caused by norovirus. Conclusion The prevention and control of other infectious diarrhea is one of the important tasks in the prevention and control of infectious diseases in Kunming area. Children are recommended to be vaccinated with rotavirus vaccine before the epidemic season, and the epidemic monitoring and control work in key areas and institutions should be strengthened during the peak period.

Key words: Other infectious diarrhea, Epidemic characteristics, Public health emergencies, Kunming City