Field observations of the efficacy of TGE vaccine.
D000818:Animals; D000831:Animals, Newborn / Q000276:immunology; D005260:Female; D005761:Gastroenteritis, Transmissible, of Swine / Q000517:prevention & control*; D005865:Gestational Age; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D013552:Swine; D014765:Viral Vaccines / Q000008:administration & dosage*