Duck hepatitis type I and influenza in mallard ducks (Anas platyrhynchos).
D000818:Animals; D002642:Chick Embryo; D004372:Ducks / Q000382:microbiology*; D004769:Enterovirus Infections / Q000150:complications / Q000662:veterinary*; D006385:Hemagglutination Inhibition Tests; D004371:Hepatitis Virus, Duck / Q000302:isolation & purification; D009975:Orthomyxoviridae / Q000302:isolation & purification; D009976:Orthomyxoviridae Infections / Q000150:complications / Q000662:veterinary*; D011201:Poultry Diseases; D012852:Sinusitis / Q000662:veterinary