GPT and hepatitis A virus infection: In most cases, it presents with asymptomatic elevation of alanine aminotransferase (ALT), aspartate aminotransferase (AST) or total bilirubin, but severe hepatitis and liver failure associated with fever, malaise, jaundice and change of stool color can also occur (Tian et al., 2018; Chhabra and Kennedy, 2021).