We also found that although a three-armed trial of 60 severe COVID-19 patients conducted by Wen Long et al. [52], compared with the low dose group of 50 mL XBJ injection, the CRP of the high dose group of 100 mL XBJ injection was significantly decreased, no remarkable superiority was observed according to the level of CRP in this study. Here, CRP is linked to COVID-19.