GPT and hemophagocytic syndrome: In SFTS patients complicated with HLH, the coagulation abnormalities may present dynamic evolutionary characteristics: in the early stage, the coagulation indexes are mainly characterized by hypocoagulation; however, with the aggravation of endothelial injury, microvascular thrombosis may occur in the later stage, ultimately progressing to DIC [23].This study shows that a decreased ALT/AST ratio, elevated LDH, and increased DD are independent risk factors for HLH in SFTS patients.