Presentation on theme: "Back to Basics: The Challenge of Reinstating Hepatitis B Vaccination at Birth This material was developed by the August A. Fink Memorial Education Division,"— Presentation transcript:
Back to Basics: The Challenge of Reinstating Hepatitis B Vaccination at Birth This material was developed by the August A. Fink Memorial Education Division, LLC (AAF-MED)
Philip Rosenthal, MD Program Chair Director, Pediatric Hepatology Medical Director, Pediatric Liver Transplant Program University of California, San Francisco Medical Center San Francisco, CA Faculty Sharon G. Humiston, MD, MPH Assistant Professor of Emergency Medicine University of Rochester Medical Center Strong Memorial Hospital Rochester, NY Thomas N. Saari, MD, FAAP Professor of Pediatrics Department of Pediatrics Division of Pediatric Infectious Disease University of Wisconsin School of Medicine Madison, WI Deborah L. Wexler, MD Executive Director/Medical Director Immunization Action Coalition Saint Paul, MN
Objectives To ensure that physicians and hospital personnel are aware of the widespread availability of hepatitis B vaccines that do not contain thimerosal as a preservative To underscore the rationale and importance of resuming the routine birth dose of hepatitis B vaccine for all infants To stress the importance of screening pregnant women for hepatitis B surface antigen (HBsAg)
Case Report A woman tested HBsAg-positive during pregnancy Test results were inaccurately reported as “negative” to the hospital where the infant was born, and not reported to the health department as required by laws
Case Report – continued July 1999: The hospital stopped giving newborns the 1 st dose of hepatitis B vaccine because of thimerosal concerns September 1999: Hepatitis B vaccine without thimerosal as a preservative became available, but hospital elected not to resume routine neonatal hepatitis B immunization
Case Report – continued The infant received neither hepatitis B vaccine nor hepatitis B immune globulin (HBIG) The infant developed hepatitis B at 3 months of age and died from fulminant hepatitis less than 2 weeks after the onset of symptoms This tragedy is preventable and should never happen again !!
Risk of Developing Chronic Hepatitis B by Age at Infection
Hepatitis B Mortality About 1/3 of chronic HBV infections in the United States start in perinatal and early childhood Except flu and pneumococcal infections, HBV kills more people/year than any other vaccine-preventable disease (VPD) (>5,000 HBV deaths/year) HBV causes hepatocellular carcinoma that kills about 1,000 Americans annually
Estimated HBV Infections among US Born Children (aged <10 years) of HBsAg-Negative Mothers, 1990 7280605120,298Asian/ Pacific Islander 867723.73,656,618White/Black/ Hispanic # of Annual Infections Annual Incidence/ 100,000 Births/ year Race/Ethnicity
Hepatocellular Carcinoma Secondary to Childhood-acquired HBV Infection
Pediatric Deaths Due to Vaccine Preventable Diseases (VPD) (aged < 12 years) Varicella1 Pneumococcal Disease3 H. Influenza Disease6 Measlesl0 Hepatitis B25 ** * Pre-vaccine era ** Most HBV deaths are deferred until 15-30 years from time of perinatal/childhood exposure Estimated Annual VPD Deaths in Wisconsin*
Thimerosal Alert July 1999: American Academy of Pediatrics (AAP) and the United States (U.S.) Public Health Service state: The first dose of hepatitis B vaccine given to infants born of HBsAg-negative women may be postponed until 2-6 months of age Women who are HBsAg-positive or who have unknown HBsAg status should receive thimerosal- containing hepatitis B vaccine, due to the substantial risk of infection to their infants
Thimerosal Alert - continued Hepatitis B vaccine without thimerosal as a preservative were quickly developed and subsequently received Food and Drug Administration (FDA) approval The supply of these vaccines are now sufficient for U.S. recommendations!!!
Back to Basics Based on the availability of hepatitis B vaccines without thimerosal as a preservative, the AAP and the U.S. Public Health Service have recommended that routine hepatitis B immunization for all newborn infants should be reintroduced immediately in hospitals in which this policy and practice had been discontinued MMWR. September 10, 1999;48:780-2.
Unfortunately, resumption of the birth dose has not occurred in many hospitals throughout the U.S. Centers for Disease Control and Prevention (CDC) studies indicate that, soon after the AAP-U.S. Public Health Service statement was issued, most hospitals discontinued routine immunization of newborn infants of HBsAg-negative mothers An alarming number of hospitals suspended hepatitis B immunization to newborns regardless of the mother’s HBsAg status Back to Basics
Hepatitis B Vaccine Recommendation Who: Advisory Committee on Immunization Practices (ACIP) AAP American Academy of Family Physicians (AAFP) What: Hepatitis B vaccine for all < 18 years of age
How is Hepatitis B Vaccine Given? Hepatitis B vaccine is given as a series of three intramuscular doses There is flexibility of the dosing schedule for hepatitis B immunization series, regardless of how long the intervals might be stretched More than 95% of children and adolescents develop adequate antibody to the recommended series of three doses
Is Hepatitis B Vaccine Safe? Hepatitis B vaccines have been available since 1982 Hepatitis B vaccines currently available in the U.S. are made using recombinant DNA technology, and contain only a portion of the outer protein of the virus The vaccine does not contain any live components
Is Hepatitis B Vaccine Safe? Hepatitis B vaccines have been shown to be very safe when given to infants, children or adults More than 40 million persons have received the vaccine in the U.S. More than 750 million persons have received the vaccine worldwide Most common side effects are pain at the injection site and mild to moderate fever that is not more common than among children receiving other vaccines
Is There an Association Between Hepatitis B Vaccine and Serious Side Effects? chronic illness multiple sclerosis Guillain-Barre syndrome transverse myelitis optic neuritis There is no confirmed scientific evidence that hepatitis B vaccine causes: seizures sudden infant death syndrome chronic fatigue syndrome rheumatoid arthritis autoimmune disorders
Routine Newborn Hepatitis B Vaccination Benefits Only vaccine that prevents cancer Only vaccine that is reliably immunogenic in the newborn period An opportunity to immunize during one of the few dependable medical encounters (at delivery in a hospital)
Routine Newborn Hepatitis B Vaccination Benefits The best opportunity to prevent unrecognized perinatal transmission and to prevent transmission within families due to unrecognized chronic HBV infection in the household Places the importance of immunization as an early and visible priority for parents Added insurance that an overall immunization series will be completed on time The foundation of the overall strategy to eliminate HBV infection in the U.S.
Completion of Hepatitis B Vaccine Series by Time of First Dose Source: Yusuf H, et al, unpublished data, National Immunization Survey, 1998
Implementing Protocols for HBV Prevention Screen all pregnant women for HBsAg Identifies infants requiring immunoprophylaxis soon after birth to prevent perinatal HBV infection Identifies household contacts needing vaccination Allows medical follow-up of women and other contacts with chronic HBV infection
Pregnant Women and State HBsAg Requirements Currently, only 19 states require HBsAg screening of pregnant women in the US It is recommended that obstetricians and family doctors routinely screen all pregnant women for HBsAg during each pregnancy, regardless of the presence or absence of risk factors and regardless of history of vaccination
Hepatitis B Immunization at Birth Eliminates the possibility of missed immunoprophylaxis in infants born to mothers who are HBsAg-positive Ensures that infants born of mothers whose HBsAg status is unknown at delivery receive timely immunoprophylaxis Reduces the risk of early childhood infection
Hepatitis B Immunization at Birth Avoids a missed opportunity for immunization by initiating immunization at birth Helps convey the importance of immunization to the parents and hospital staff Reduces the number of doses needed to be administered simultaneously with other vaccines during subsequent well-child visits May increase the likelihood of completing the hepatitis B vaccine series as well as other childhood immunizations
How to Implement Routine Hepatitis B Vaccination at Birth Give all infants a birth dose of hepatitis B vaccine in the hospital Treat infants born to HBsAg-positive mothers within 12 hours of birth HBIG Hepatitis B vaccine (dosage for babies born to infected mothers) Give first dose of vaccine with HBIG, but at a different site Give the preferred vaccination schedule at aged 0, 1-2, 6 months with testing for HBsAg and antibody to HBsAg (anti-HBs) at aged 9-15 months
How to Implement Routine Hepatitis B Vaccination at Birth Transmit screening and vaccination records Follow-up of HBsAg-positive mothers and treatment of infants must be ensured Transfer of HBsAg screening information between prenatal care provider and delivery services Transfer of infant vaccination record between hospital nursery and pediatric services
How to Implement Routine Hepatitis B Vaccination at Birth Management of infants born to women without prenatal HBsAg screening Draw mother’s blood for HBsAg testing on admission Give hepatitis B vaccine to infant within 12 hours of birth Give HBIG within 7 days of birth if maternal test results are positive Complete infant hepatitis B vaccination series at 0, 1-2, 6 months Assure following HBsAg and anti-HBs testing of infant at aged 9-15 months
Summary Points The risk of HBV infection in children is not only from perinatal transmission from HBV-infected mothers, but from close contact with household members and caregivers who have acute or chronic HBV infection
Summary Points Screen all pregnant women during each pregnancy for HBsAg - repeat during pregnancy if woman practices high risk behaviors Ensure that all infants born to HBsAg-positive mothers receive timely and appropriate immunoprophylaxis with HBIG and hepatitis B vaccine