Hepatocellular damage was detected at late stages of infection, as revealed by elevated serum levels of alanine transaminase (ALT; Fig. 2F), albeit without any signs of biliary tract disease, as indicated by normal levels of γ-glutamil-transaminase (Gamma-GT) and total bilirubin (TBil, Fig. S1C–D) or the absence of hepatic synthetic function abnormalities (normal levels of serum albumin and total serum protein; (Fig. S1E–F). This evidence concerns the gene GPT and infection.