title: Vertical transmission of hepatitis-B.
mesh_terms: D005260:Female; D005500:Follow-Up Studies; D006509:Hepatitis B / Q000635:transmission*; D006514:Hepatitis B Surface Antigens / Q000276:immunology; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000635:transmission*; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000635:transmission*
chemical_list: D006514:Hepatitis B Surface Antigens