Severe sinusitis in ducklings caused by influenza A virus.
D000818:Animals; D002645:Chickens; D004372:Ducks; D005260:Female; D008297:Male; D009976:Orthomyxoviridae Infections / Q000662:veterinary*; D011201:Poultry Diseases; D012852:Sinusitis / Q000662:veterinary*