8) A 26-year-old lady attends the antenatal clinic at 18 weeks of gestation following
her booking results, which have shown her to be positive for hepatitis B. Antigen
analysis demonstrates that she is hepatitis surface antigen positive, hepatitis e
antigen negative and anti-Hbe reactive. Her liver function tests are as follows:
bilirubin 10 mg/dl, aspartate aminotransferase 36 IU, alanine aminotransferase
40 IU and alkaline phosphatase 600 IU. What is the most appropriate interven-
tion to prevent vertical transmission?