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  • Title: An investigation of perinatal hepatitis B virus infections among a high risk population: the delivery hospital as a safety net.
    Author: Fischer G, Wang S, Ahring S, Fowler K, Hainline S, Chinglong M, Jacques-Carroll L, Bell B, Williams I.
    Journal: Pediatr Infect Dis J; 2009 Jul; 28(7):593-7. PubMed ID: 19455073.
    Abstract:
    BACKGROUND: There was an increase in perinatal hepatitis B virus (HBV) infections in one Arkansas county that disproportionately affected Marshallese infants. METHODS: An estimated 6000 to 10,000 Marshallese, from the Pacific island nation of the Marshall Islands where HBV is highly endemic, live in one Arkansas county. We conducted a retrospective review of hospital and health department records from 2003 to 2005 in that county. We compared maternal screening for hepatitis B surface antigen (HBsAg) between Marshallese and non-Marshallese. We also reviewed birth and immunization records for infants born to HBsAg-positive mothers to evaluate postexposure prophylaxis (PEP). RESULTS: Ten percent (n = 41) of Marshallese births and 0.1% (n = 15) of non-Marshallese births were to HBsAg-positive women. Among those born to HBsAg-positive women, Marshallese and non-Marshallese infants were equally likely to receive PEP with hepatitis B vaccine (98% vs. 100%; P[r] = 0.98) and hepatitis B immune globulin (HBIG) <or=12 hours after birth (88% vs. 87%; P = 0.91). Approximately 57% (n = 32) of all infants born to HBsAg-positive women were tested for perinatal HBV infection. The proportion of Marshallese (17%) and non-Marshallese (13%) infants who tested positive for HBsAg at ages 9 to 25 months was similar (P = 0.78). Receiving HBIG >12 hours after birth was the only factor significantly associated with infection. CONCLUSIONS: Although HBV infection was more prevalent among Marshallese compared with non-Marshallese women, there were no differences in infant receipt of PEP and perinatal HBV infection. Delivery hospitals in this county had standing orders to administer hepatitis B vaccine to all newborns, which likely provided a safety net to prevent perinatal HBV transmission in this high-risk population.
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