Isolation of type A influenza and Newcastle disease viruses from migratory waterfowl in the Mississippi flyway.
Twenty-seven chicken red blood cell agglutinating agents were isolated from 187 tracheal swabbings of apparently healthy migratory mallard ducks (Anas platyrhynchos) in the Mississippi flyway. Twenty-four of the isolants were type A influenza virus; 3 lentogenic Newcastle disease viruses were isolated. Isolations were not made from either 65 giant Canada geese (Branta canadensis) or 60 Franklins' gulls (Larus pipixcan).
D000818:Animals; D001717:Birds / Q000382:microbiology*; D004372:Ducks / Q000382:microbiology; D005777:Geese / Q000382:microbiology; D009980:Influenza A virus / Q000276:immunology / Q000302:isolation & purification*; D008922:Mississippi; D009522:Newcastle disease virus / Q000302:isolation & purification*; D014132:Trachea / Q000382:microbiology