Biomedical subjects
Publications and source records attributed to B S Pomeroy.
Two influenza viruses were isolated from turkeys in 1973. A/Turkey/Minn/PR/73 was isolated from a flock with a 75% mortality. Antigenically its hemagglutinin was not similar to that of A/Turkey/Wis/66 virus. A/Turkey/Minn/Kandi/73 was recovered from a flock with 67% mortality. This isolant was antigenically similar to A/Turkey/Wis/66.
The intravenous and intracerebral pathogenicity index tests normally used for Newcastle disease virus isolates were used to measure the virulence of 13 avian influenza viruses. The tests allowed quantitative measurements of the virulence of the avian influenza viruses, and the results confirmed the range in virulence, between the two extremes, of the avian influenza viruses and demonstrated the lack of correlation between virulence and antigenic type.
Losses greater than 3% were incurred in a large flock of domestic geese on summer pasture. Necropsy of the sick birds revealed no significant bacterial or viral isolates. The trematodes Echinostoma revolutum and Notocotylus attenuatus were present in considerable numbers, respectively in the small and large intestines.