GPT and Epstein-Barr virus infection: A total of 104 patients with EBV-associated RTI (EBV-RTI), 32 patients with atypical EBV infection, 54 patients with EBV-IM1 (normal ALT levels), 50 patients with EBV-IM2 (elevated ALT levels), 50 patients with acute respiratory infection (AURI, without EBV infection), and 30 healthy controls were enrolled in this study.