title: Letter: Chemoprophylaxis against tuberculosis.
mesh_terms: D001942:Breast Feeding; D003906:Developing Countries; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000517:prevention & control*; D007538:Isoniazid / Q000627:therapeutic use*; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious; D014376:Tuberculosis / Q000517:prevention & control*
chemical_list: D007538:Isoniazid