铜绿假单胞菌, 大肠埃希菌, 克雷伯菌属及真菌是主要致病菌.Pseudomonas aeruginosa, Escherichia coli , Klebsiella pneumoniae and fungi were the main pathogens.G~+球菌占12.9%, 念珠菌属占14.1%.Gram - positive cocci were found in 12.9 %. Candida spp was present...