OBJECTIVES: This study examined serologic markers of hepatitis B virus (HBV) infection and immunity among young Asian/Pacific Islander men who have sex with men (API MSM) in San Francisco. METHODS: Participants were 496 API MSM, aged 18 to 29 years, recruited to participate in a cross-sectional survey using a random, venue-based, time-space sampling method. RESULTS: Of 489 subjects tested, 28.0% had evidence of past HBV infection, including 8.2% who were chronically infected; 24.9% were immune as a result of vaccination; and 47.0% were susceptible to infection. Self-reported vaccination history was low overall and discrepant with serologic findings. CONCLUSIONS: HBV infection persists as a significant health problem among API MSM as a result of childhood infection, low vaccination coverage in Asia and the United States, and continuing adult exposure through male-male sex. Although challenging, vigorous efforts are needed to increase vaccination coverage among adult API MSM.
OBJECTIVES: This study examined serologic markers of hepatitis B virus (HBV) infection and immunity among young Asian/Pacific Islander men who have sex with men (API MSM) in San Francisco. METHODS:Participants were 496 API MSM, aged 18 to 29 years, recruited to participate in a cross-sectional survey using a random, venue-based, time-space sampling method. RESULTS: Of 489 subjects tested, 28.0% had evidence of past HBV infection, including 8.2% who were chronically infected; 24.9% were immune as a result of vaccination; and 47.0% were susceptible to infection. Self-reported vaccination history was low overall and discrepant with serologic findings. CONCLUSIONS:HBV infection persists as a significant health problem among API MSM as a result of childhood infection, low vaccination coverage in Asia and the United States, and continuing adult exposure through male-male sex. Although challenging, vigorous efforts are needed to increase vaccination coverage among adult API MSM.
Authors: Javier R Lama; Hellen S Agurto; Juan V Guanira; Carmela Ganoza; Martin Casapia; Nora Ojeda; Abner Ortiz; Victoria Zamalloa; Luis Suarez-Ognio; Cesar Cabezas; Jose L Sanchez; Jorge Sanchez Journal: Am J Trop Med Hyg Date: 2010-07 Impact factor: 2.345
Authors: Eric P F Chow; Joseph D Tucker; Frank Y Wong; Eric J Nehl; Yanjie Wang; Xun Zhuang; Lei Zhang Journal: PLoS One Date: 2014-02-24 Impact factor: 3.240