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Oster NV, Williams EC, Unger JM, Newcomb PA, Jacobson EN, deHart MP, Englund JA, Hofstetter AM. Sociodemographic, clinical and birth hospitalization characteristics and infant Hepatitis B vaccination in Washington State. Vaccine. 2019 Sep 10; 37(38):5738-5744.
OBJECTIVE: Hepatitis B (HepB) vaccine is recommended at birth; however, national coverage estimates fall far below target levels. Studies describing the factors associated with infant HepB vaccination are lacking. This study aimed to identify the sociodemographic, clinical and birth hospitalization factors associated with timely receipt of the first HepB vaccine dose. STUDY DESIGN: This retrospective cohort study included Washington State infants born weighing = 2000?g who received birth hospitalization care at an urban academic medical center between January 2008-December 2013. Multivariable logistic regression was used to estimate adjusted odds ratios (AOR) and 95% confidence intervals (CI) for associations between maternal and infant characteristics and HepB vaccine receipt during the birth hospitalization. RESULTS: Of the 9080 study infants, 75.5% received HepB vaccine during the birth hospitalization. Infants had higher odds of being vaccinated during the birth hospitalization if they were Hispanic (AOR 2.08; CI: 1.63, 2.65), non-Hispanic black (AOR 2.34; CI: 1.93, 2.84) or Asian (AOR 2.70; CI: 2.22, 3.28) compared to non-Hispanic white. Infants with a Spanish- vs. English-speaking mother (AOR 1.97; CI: 1.46, 2.68), public vs. private insurance (AOR 2.01; CI: 1.78, 2.29), and those hospitalized? = 96?h vs. 24 to? < 48?h (AOR 1.67; CI: 1.34, 2.09) also had higher odds of vaccination. CONCLUSIONS: Populations that are typically underserved (e.g., publicly insured, racial/ethnic minorities) had higher odds of receiving HepB vaccine during the birth hospitalization. These findings may aid in identifying high-risk infants who could benefit from targeted interventions to increase initial HepB vaccination.