influenza a outbreaks in minnesota turkeys due to subtype h10n7 and possible transmission by waterfowl. | 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 ... | 1983 | 6870718 |