Table 1: Summary of patient data and test results.

Patient: Female first-year student nurse, aged 48
Month 1 First hepatitis A/B vaccine dose administered
Month 2 Second hepatitis A/B vaccine dose administered
Month 3 First examination (GP setting), yielding: 1) Clinical symptoms: General fatigue.
2) Elevated liver enzyme values (AST, ALT, GGT, and ALP).
3) HAV, HBV, and HCV serology: Anti-HAV IgM and Anti-HAV IgG: Positive; HBsAg: Negative; Anti-HBs: 302 IU/l; Anti-HBc and Anti-HCV: Negative.
Month 6 Second examination (occupational medicine setting), yielding:
1) Clinical symptoms: Resolved.
2) Normal liver enzyme values (AST, ALT, GGT, and ALP).
3) HAV, HBV, and HCV serology: Anti-HAV IgM: Negative; Anti-HAV IgG: Positive; HBsAg: Negative; Anti-HBs: 505 IU/l; Anti-HBc and Anti-HCV: Negative.
4) HEV serology: Anti-HEV IgM and Anti-HEV IgG: Positive.
Month 6 Third hepatitis A/B vaccine dose administered