Condition/Disease
1. Clinical response rate of the polymyxin B group assessed by infection site and infectious pathogen at TOC (End of Treatment (EOT) + 7 days). 2. Clinical response rate of the two treatment groups at TOC. 3. Microbiological response rate of the polymyxin B group assessed by infection site and infectious pathogen at TOC. 4. Microbiological response rate of the two treatment groups at TOC. 5. All-cause mortality rate of the two treatment groups at day 28. 6. Infection-related mortality rate of the two treatment groups at day 28.