Analysis on the outcomes of hepatitis B virus perinatal vertical transmission: nested case-control study.

Objective: Hepatitis B virus (HBV) infection is a public health problem worldwide, with vertical transmission as the leading transmission route. Therefore, it is very important to explore the risk factors associating with HBV perinatal transmission, providing valuable information for preventive and curative means for HBV perinatal infections. In this study, we systematically investigated the impact of adverse outcomes of HBV maternal infection on fetal intrauterine infection.