The top three pathogens in nosocomial infection were Pseudomonas aeruginosa (18.24%), Escherichia coli (17.61%), and Staphylococcus epidermidis (13.84%).

• 医院感染病原菌前3位是：铜绿假单胞菌(18.；24%25)，大肠埃希菌(17