Duck virus enteritis (duck plague) epizootiology and related investigations.
D000818:Animals; D004372:Ducks; D011201:Poultry Diseases / Q000453:epidemiology*; D014481:United States; D014765:Viral Vaccines; D014777:Virus Diseases / Q000453:epidemiology / Q000662:veterinary*; D014713:Viruses, Unclassified
D014765:Viral Vaccines