Predictors of HPV and Hep B vaccination beliefs and behaviors among Vietnamese American young adults: Implications for dual vaccine coverage

Christine Tonhu Nguyen & Sora Park Tanjasiri · 2025-07-15

Vietnamese Americans experience the highest cervical and liver cancer rates across all other Asian American subgroups, alongside lower vaccination rates for human papillomavirus (HPV) and hepatitis B (Hep B). The aim of this cross-sectional study was to examine beliefs, knowledge, and uptake of HPV and Hep B vaccines, both individually and in combination, and to assess how constructs of the Health Belief Model (HBM) relate to cancer vaccine intention. We used convenience sampling to conduct an online survey of 140 Vietnamese American young adults aged 18-26 years. Descriptive analysis employing bivariate Chi-square tests assessed demographic factors associated with receiving at least one dose of the HPV vaccine, Hep B vaccine, or both. Logistic regression with backward selection was used to identify significant predictors of vaccine intention. Cancer vaccine uptake was high: 87% (