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Randomized trial to determine safety and immunogenicity of two strategies for hepatitis B vaccination in healthy urban adolescents in the United States.

Author(s): Cunningham CK, Rudy BJ, Xu J, Bethel J, Kapogiannis BG, Ahmad S, Wilson CM, Flynn PM; Adolescent Medicine Trials Network for HIV/AIDS Interventions.

Collaborators: D'Angelo LJ, Trexler C, Hagler R, Klamberg A, Martinez J, Henry-Reid L, Bojan K, Jackson R, Futterman D, Enriquez-Bruce E, Campos M, Flynn P, Stender S, Branum K, Dillard M, Culley T, McKinley C, Wride T, Abdalian SE, Baker A, Jean-jacques T, Kozina L, Moscicki B, Auerswald C, Irish LD, Molaghan JB, Peralta L, Flores L, Gorle RS, Febo IL, Ayala-Flores HT, Gomez AT, Emmanuel P, Lujan-Zilbermann J, Straub DM, Callejas S, Julian PC, Rebolledo A.

Affiliation(s): Department of Pediatrics, Duke, Durham, NC, USA. coleen.cunningham@duke.edu

Publication date & source: 2010, Pediatr Infect Dis J. , 29(6):530-4

BACKGROUND: Multiple studies have shown excellent response rates after hepatitis B immunization in youth; however, one previous study conducted in urban youth demonstrated poor responses. METHODS: Urban youth, ages 12 to 17 years, at participating Adolescent Medicine Trials Network for HIV/AIDS Interventions Clinical/Research sites were randomized to receive either 2 doses of Recombivax HB (10 microg hepatitis B surface antigen) or Twinrix (20 microg hepatitis B surface antigen and 720 EL.U hepatitis A antigen) at 0 and 24 weeks. Safety data were collected and antibody measures performed at 0, 28, and 76 weeks. RESULTS: A total of 123 subjects were enrolled and 102 had week 28 serum samples available for antibody measure. A positive response (serum antibody > or =10 mIU/mL) to hepatitis B antigen was documented in 41 of 47 (87.2%; 95% confidence interval [CI] 74.3%-95.2%) Recombivax HB recipients and in 52 of 55 (94.6%; 95% CI, 84.9%-98.9%) Twinrix recipients (P = 0.295). In an adjusted analysis, those identified as Hispanic ethnicity (N = 86) were more likely to have a positive response (odds ratio 7.38, 95% CI, 1.56-34.95; P = 0.0018); whereas those who identified as not heterosexual (N = 9) were less likely to respond (odds ratio = 0.12, 95% CI, 0.02-0.74). The majority of youth in the Twinrix arm were hepatitis A antibody positive at baseline (26/51; 51%); however, 24 of 25 hepatitis A antibody negative youth responded to the hepatitis A component. Both vaccines were safe. CONCLUSIONS: Response rate to 2 doses of Recombivax HB in urban youth is lower than previous studies suggest. The factors associated with diminished response are not known.

Page last updated: 2013-02-10

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