Analysis of healthcare-associated infection surveillance in a 3A hospital from 2014 to 2023
Objective To analyze the surveillance results and development patterns of healthcare-associated infection in a 3A hospital in Chongqing,to provide foundation for the effective prevention and control of healthcare-associated infection,along with the formulation of targeted control measures.Methods A retrospective investigation method was employed to collect healthcare-associated infection data from the hospital spanning 2014 to 2023 and sourced through the healthcare-associated infection case surveillance system.Subsequently,the infection situation and its changing trends over each year,the incidence of infections across different age groups,high-risk infection departments,and the detection of pathogenic bacteria were calculated and analyzed.Results Over the period from 2014 to 2023,a total of 508 006 inpatients underwent surveillance,revealed 5 824 cases of healthcare-associated infection.The incidence of healthcare-associated infection displayed a decreasing trend,with rates of 2.04％,1.61％,1.53％,1.35％,1.01％,0.86％,1％,0.88％,0.91％and 0.9％,averaged at 1.21％(x2=9.98,P＜0.01).The lowest infection rate was observed in patients aged 11-20 years(1.55％),while the highest incidence occurred in patients aged 71-80 years(22.79％).Department of intensive care medicine(5.72％),neurosurgery(4.71％),and hematology(3.80％)were identified as departments with a high incidence of nosocomial infection.Gram-negative bacteria constituted the majority of detected pathogens each year,ranged from 53.59％to 84.38％.Between 2014 and 2017,the primary Gram-negative bacteria were Acinetobacter baumannii and Pseudomonas aeruginosa.However,post-2018,Klebsiella pneumoniae supplanted Pseudomonas aeruginosa,became the second most frequently detected strain.Staphylococcus aureus was the predominant Gram-positive bacteria observed from 2014 to 2023.Conclusion In recent ten years,the incidence of infection in this hospital had generally show a decreasing trend.In the later stage,attention should be paid to the targeted surveillance of high-risk infection departments,focus on the prevention and control of infection caused by Acinetobacter baumannii.
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