Influence of management and sales on disease dissemination and the need for immunizing agents.
D000821:Animal Feed; D000818:Animals; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001424:Bacterial Infections / Q000276:immunology / Q000662:veterinary; D005260:Female; D005525:Food-Processing Industry; D007114:Immunization / Q000662:veterinary*; D008431:Maternal-Fetal Exchange; D010272:Parasitic Diseases / Q000276:immunology; D010273:Parasitic Diseases, Animal; D011247:Pregnancy; D013552:Swine; D013553:Swine Diseases / Q000276:immunology*; D014481:United States
D000900:Anti-Bacterial Agents