Abstract

Production and fertility problems arise frequently in turkey breeding flocks. Various factors or agents have been incriminated as the cause of some of them, but many others remain unsolved by diagnosticians (1,2,7). This report concerns one such problem where an unusual respiratory disease developed in a turkey flock. Respiratory symptoms were followed by a marked drop in egg production and hatchability. A hemagglutinating virus, hitherto unknown in the area and distinct from Newcastle disease virus (NDV), was isolated from infected birds. The agent, which we have tentatively named Wilmot virus, was isolated on only one occasion (Flock 1), but serological evidence of its presence was encountered in 4 other flocks (Flocks 2 to 5).

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