Progress report: duck plague surveillance of American Anseriformes.
D000818:Animals; D004372:Ducks; D005260:Female; D005777:Geese; D009519:New York City; D011201:Poultry Diseases / Q000382:microbiology*; D014777:Virus Diseases / Q000662:veterinary*; D014713:Viruses, Unclassified / Q000302:isolation & purification