title: Vertical transmission of type B hepatitis.
mesh_terms: D000293:Adolescent; D000328:Adult; D002353:Carrier State; D005260:Female; D006506:Hepatitis A / Q000276:immunology*; D006511:Hepatitis B Antigens / Q000302:isolation & purification; D006515:Hepatitis B virus / Q000276:immunology*; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000276:immunology; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000276:immunology*
chemical_list: D006511:Hepatitis B Antigens