Influencing factors and trends in post-vaccination serologic testing completion rates among infants born to HBsAg-positive mothers in Guangdong Province, 2021–2023

This study highlights showing significant improvements in PVST completion rates among HBV-exposed infants from 2021 to 2023. Additionally, the proportion of infants completing PVST at 7-9 months of age increased substantially during this period. These findings highlight the progress made in improving PVST adherence and underscore the importance of targeted interventions to further enhance compliance among at-risk populations.