The rank order of pathogens was: Staphylococcus aureus (45.9%), Pseudomonas aeruginosa (10.8%), Enterococcus spp. (8.2%), Escherichia coli (7.0%), Enterobacter spp. (5.8%) and Klebsiella spp. (5.1%).

• 病原体的等级顺序是：金黄色葡萄球菌(45.；9%25)、铜绿假单胞菌（10