title: Prevention of perinatal transmission of chronic hepatitis B surface antigen (HBsAg) carrier state.
mesh_terms: D002353:Carrier State / Q000635:transmission*; D005260:Female; D006509:Hepatitis B / Q000635:transmission*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious
chemical_list: D006514:Hepatitis B Surface Antigens