Transmission from mother to infant of hepatitis B virus infection.
D005260:Female; D006509:Hepatitis B / Q000517:prevention & control / Q000635:transmission*; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000635:transmission*; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000635:transmission*