Background: Hepatitis B virus (HBV) infection in cancer patients receiving chemotherapy carries high morbidity and mortality. Conventional hepatitis B vaccination with three doses at 0, 1, and 6 months apart is ineffective in prevention of HBV infection.
Objectives: To compare the efficacy of accelerated, multiple, double-dose HB vaccine with conventional HB vaccine in cancer patients receiving chemotherapy (CT).
Methods: Patients of cancer who were planned for CT were screened for HBV markers (HBsAg, total anti-HB core, anti-HBs antibody and HBV DNA). Patients with negative HBV serum markers received HB vaccine in two groups. Group A received three double doses (40 μg) of recombinant HB vaccine at 0, 1, and 3 weeks before CT and additional three double doses post CT. Group B received HB vaccine (20 μg) at 0, 1, and 6 months. Efficacy of vaccine in the two groups was compared by anti-HBs titers achieved at 3, 6, and 9 months and by HBsAg positivity following CT at 1 year follow up.
Results: Protective anti-HBs titers (>10 mIU/mL) at 3, 6, and 9 months in group A and B was 41.1 %, 66.2 %, and 76% and 26 %, 37.7 %, and 49% respectively (p = 0.001). Seven of 454 (1.5%) patients in group A became HBsAg positive after vaccination compared to 19/472 (4.0%) in group B (p = 0.022).
Conclusion: Accelerated, multiple, double-dose HB vaccine increases seroprotection and is more effective than conventional HB vaccine in preventing HBV infection.
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