<![CDATA[Hepatitis B is a global health issue with the risk of triggering cirrhosis and liver cancer, where vertical transmission from mother to infant serves as the primary route of infection. In Bengkulu City, despite the high utilization of social media as a health information source, many pregnant women are late in conducting Antenatal Care (ANC) visits and have not optimized preventive measures due to exposure to unverified information (misinformation/hoaxes). Based on the PRECEDE-PROCEED theoretical framework, this quantitative study with a cross-sectional approach aims to analyze the correlation between social media exposure and Hepatitis B prevention behavior among 50 pregnant women at the Beringin Raya Public Health Center, Bengkulu City. The sampling technique used in this study was accidental sampling. Data were collected using questionnaires on social media exposure and Hepatitis B prevention behavior among pregnant women. The questionnaire data were analyzed univariately to observe frequency distributions and bivariately using the Chi-Square test. Univariate analysis showed that the majority of respondents fell into the risky social media exposure category (54%) and had poor Hepatitis B prevention behavior (58%). The characteristics were dominated by maternal age between 20–30 years (60%), second-trimester gestational age (40%), secondary education level (junior/senior high school) (80%), no history of Hepatitis screening (90%), and housewife status (70%). Bivariate analysis revealed a Chi-Square test value of p = 0.027 (vaue p = 0,027 < α (0,05).).: This proves that there is a significant relationship between social media exposure and Hepatitis B prevention behavior among pregnant women. Therefore, it is recommended that the Beringin Raya Public Health Center optimize official social media channels to launch evidence-based digital educational campaigns designed attractively to counteract misinformation and improve compliance with HBsAg screening. Meanwhile, future researchers are expected to examine other variables in the PRECEDE-PROCEED model and utilize experimental designs to measure the effectiveness of social media intervention Keywords: Social Media Exposure; Hepatitis B Prevention Behavior; Pregnant Women; Bengkulu City]]>
