Patient B: 27-year-old Caucasian female received two doses of HBV vaccine with anti-HBs response before LT. Post-LT, she did not receive any HBV prophylaxis. HBV infection was diagnosed 15 months post-LT. Patient was asymptomatic and had mildly elevated ALT. Entecavir was started and HBV DNA decreased from 8.9 log10 IU/mL to <100 IU/mL within 10 months. HBV hepatitis B virus, LT liver transplantation, HBsAg hepatitis B surface antigen, Anti-HBs hepatitis B surface antibody, Anti-HBc hepatitis B core antibody, HBeAg hepatitis B e antigen, Anti-HBe hepatitis B e antibody, ALT alanine aminotransferase, UD undetectable