Hepatitis B Vaccine

1. Indications
   1. All medically stable newborns >2000 g within 24 hours of birth (then at age 2 months, and age 6 months)
   2. Unvaccinated infants and children
   3. All health care personnel
   4. Hemodialysis patients
   5. Patients requiring frequent Blood Transfusion
   6. Staff and residents at developmentally disabled home
   7. Male homosexuals and their sexual contacts
   8. Intravenous Drug Abuse
   9. Sexual contacts of chronic HBsAg carriers
   10. Consider for areas of high prevelance (Asia, Sub-Saharan Africa)
   11. Diabetes Mellitus under age 60 years
       1. Diabetes patients are twice as likely to contract Hepatitis B
       2. Diabetes patients are more prone to liver disease and to develop chronic hepatitis
       3. Consider for older age 60 years with additional risks (but lower efficacy in this group)
       4. (2012) Presc Lett 19(2): 8-9
2. Contraindications
   1. Anaphylactic reaction to baker's yeast
3. Efficacy
   1. Starting series after age 3 months may improve Immunity
   2. Immunity appears to be lifelong after series
   3. Perinatal and childhood exposure once accounted for one quarter of Chronic Hepatitis B
      1. Since 2004, >92% of U.S. children have complete Hepatitis BImmunity
      2. Indications
   4. References
      1. Kim (1997) Pediatrics 99:534-6 [PubMed]
      2. Kane (2000) Lancet 355:561 [PubMed]
4. Protocol: Immunity Confirmation
   1. Indications (High risk groups only)
      1. Hemodialysis
      2. Immunocompromised
      3. HIV Infection
      4. Sexual partners of those positive for HBsAg
      5. Healthcare personnel
   2. Protocol
      1. Confirm Immunity with HBsAb at 1-2 months after Vaccination in high risk groups
      2. Consider immune if HBsAb >=10 mIU (responder)
      3. If HBsAb <10 mIU (non-responder)
         1. Perform a second complete Vaccination series OR give a single additional Vaccine dose
         2. Recheck HBsAb again at 1-2 months after Vaccination
   3. References
      1. Schillie (2018) MMWR Morb Mortal Wkly Rep 67(15): 455-8 [PubMed]
5. Preparations
   1. Recombivax HB
      1. Infants, Children and Adolescents: 5 ug/dose
      2. Adults: 10 ug/dose
      3. Immunosuppressed Adult: 20 ug/dose
   2. Energix-B (SKB)
      1. Infants and Children: 10 ug/dose
   3. Heplisav-B
      1. Two dose series
   4. Twinrix (Combined Hepatitis A and Hepatitis B Vaccine)
      1. Adults: 720 EU/20 ug (1.0 ml)
      2. Not approved for use in Children (age <18 years)
      3. Requires 3 doses as in Hepatitis B Vaccine schedule
6. Dosing: Standard
   1. Protocols for Children on Standard Schedule (Primary Series or Harmonized Schedule)
      1. Dose 1: Birth to age 2 months
         1. Typically given in U.S. within 24 hours of birth for all medically stable infants
         2. First dose at age >1 month if birth weight <2000 grams)
      2. Dose 2: Age 1 to 4 months (>1 month after dose 1)
      3. Dose 3: Age 6 to 18 months (>2 months after dose 2, and age for final dose >=6 months from first dose)
   2. Adult and Adolescent Catch-Up Immunizations
      1. See Twinrix (age >18 years)
      2. Engerix-B or Recombivax-HB (3 dose series)
         1. Dose 1: Month 0
         2. Dose 2: Month 1 (at least 4 weeks after dose 1)
         3. Dose 3: Month 6 (at least 8 weeks after dose 2, 16 weeks after dose 1)
      3. Heplisav-B (2 dose series for age >18 years)
         1. Dose 1: Month 0
         2. Dose 2: Month 1 (at least 4 weeks after dose 1)
      4. Recombivax HB (2 dose series for age 11 to 15 years)
         1. Dose 1: Month 0
         2. Dose 2: Month 4 (at least 4 months after dose 1)
7. Protocols: Alternative
   1. Rapid Vaccination (3 weeks) French Study
      1. French Protocol
         1. Regular: Days 0, 28, and 56
         2. Rapid: Days 0, 10, and 21
      2. Efficacy compared with regular French schedule
         1. Day 28: Higher seroprotection than reg schedule
         2. Day 56: Lower seroprotection than regular
         3. Day 365: Same seroprotection as regular schedule
      3. References
         1. Marchou (1995) J Infect Dis 172:258-60 [PubMed]
   2. Moderately Rapid Vaccination schedule
      1. Rapid Schedule: months 0, 1, and 2
      2. Efficacy
         1. Month 3: Greater seroprotective effect
         2. Month 7: Equivalent seroprotection (100%)
            1. Higher Antibody titer for standard group
            2. Suggests possible longer term protection
      3. References
         1. Marsano (1996) Am J Gastroenterol 91:111-5 [PubMed]
8. Management: Infant with HBsAg Positive Mother (or Unknown Status)
   1. Administer HBig and Hepatitis B Vaccine
      1. Hepatitis B Immunoglobulin (HBIG)
         1. Dose: 0.5 ml within 12 hours of birth
         2. If maternal HepBsAg status unknown and birth weight >2000 g, may delay HBIG <7 days while awaiting HepBsAg
      2. Hepatitis B Vaccine starting with dose in hospital
         1. Dose 1: Within 12 hours of birth
            1. Give regardless of birth weight, in different extremity than the HBIG dose
         2. Dose 2: Age 1 months
         3. Dose 3: Age 6 months
         4. Additional, fourth Dose: Age 2 months if birth weight <2000 grams
   2. Labs at 9 to 12 months of age (or 1 month after completing series)
      1. Hepatitis B Surface Antigen (HBsAg)
      2. Hepatitis B Surface Antibody (HBsAb)
9. Precautions
   1. Safe in HIV
      1. See Immunization in HIV
   2. Safe in Pregnancy
      1. See Immunization in Pregnancy
10. Adverse Effects
    1. Anaphylaxis (in those with yeast allergy)
    2. One serious reaction per 600,000 doses
    3. References
       1. (1996) MMWR Morb Mortal Wkly Rep 45(No. RR-12):1-35 [PubMed]
11. Resources
    1. CDC Immunization Schedules (last accessed 10/28/2020)
       1. https://www.cdc.gov/vaccines/schedules/
12. References
    1. (2001) Med Lett Drugs Ther 43(1110):67-8 [PubMed]
    2. Ackerman (2015) Am Fam Physician 92(6): 460-8 [PubMed]