Monitoring analysis of disinfection quality in kindergartens in Wujiang district,Suzhou in 2021-2023
Objective To understand the current situation of disinfection quality in kindergartens in Wujiang District of Suzhou City,so as to provide a basis for promoting the prevention and control of infectious diseases in kindergartens.Methods Samples were collected by random sampling method.According to the relevant standards and specifications,the total number of bacterial colonies in the air,the hands of staff and surface of objects,and the content of Escherichia coli and Salmonella in tableware and drinking utensils, as well as the ultraviolet radiation intensity of ultraviolet lamps were tested. The qualified rate of disinfection quality of different types of nurseries were compared. Results 20 kindergartens in the area were monitored from 2021 to 2023, and a total of 662 samples of various types were collected. The total qualified rate of disinfection quality was 93.1％, and the annual qualified rate was 91.0％, 91.6％ and 98.7％, respectively. There were significant differences in the qualified rates of object surface and ultraviolet lamp in each year (P< 0.05). The qualified rate of disinfection quality of kindergartens in urban area and town area was 93.5％ and 92.2％ respectively, and the qualified rate of ultraviolet lamp in urban area was significantly higher than that in town area (81.8％ vs 52.0％,χ2=6.886,P=0.009). The total qualified rates of samples from kindergartens of different sizes (<500、500-1 000、>1 000) were 95.4％, 95.8％ and 85.5％ respectively, and the difference was statistically significant (χ2=20.696,P=0.001). The qualified rates of different object surfaces (towels, toys and desktops) were 88.5％, 98.4％ and 96.5％ respectively, and the difference was statistically significant (χ2=6.591,P=0.037). Conclusion The overall disinfection quality of kindergartens in Wujiang District of Suzhou is good, but the disinfection quality of ultraviolet lights and staff hands still needs to be further strengthened.
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