In comparison, the mixed infection group had higher ALT levels than both the bacterial infection and viral infection groups [99.5 (81, 140) U/L vs. 92.5 (78, 127) U/L vs. 84 (74, 103.5) U/L vs. 87 (76.5, 107) U/L] (Figure 6D). Here, GPT is linked to bacterial infectious disease.