title: Influenza A outbreaks in Minnesota turkeys due to subtype H10N7 and possible transmission by waterfowl.
abstract: Avian influenza outbreaks in Minnesota involving the H10N7 subtype occurred on two turkey farms in 1979 and on a third in 1980. The H10N7 (Hav2 Neq1) subtype had not previously been detected in turkeys in Minnesota or reported in the United States. The clinical signs ranged from severe, with a mortality rate as high as 31%, to subclinical. Antigenically indistinguishable viruses were isolated from healthy mallards on a pond adjacent to the turkey farms, suggesting that the virus responsible for the outbreak may have been introduced by feral ducks.
mesh_terms: D000818:Animals; D004196:Disease Outbreaks; D004372:Ducks; D009980:Influenza A virus / Q000302:isolation & purification; D005585:Influenza in Birds / Q000453:epidemiology* / Q000209:etiology / Q000635:transmission; D008910:Minnesota; D013997:Time Factors; D014422:Turkeys