Abstract

Since 1977, a disease of racing pigeons characterized by nervous signs and a persistent diarrhea, but with no respiratory signs, has spread across Europe in the early 1980s and subsequently to much of the northern hemisphere. This syndrome is regarded as the third great panzootic of Newcastle disease (ND) and is known as PMV-1 infection of pigeons, or “pigeon PMV-1”. Racing pigeons had been largely ignored by disease control authorities as a source of Newcastle disease virus (NDV) infection for domestic poultry, and in 1984 the pigeon virus caused 20 outbreaks of Newcastle disease in chickens; transmission occurred by feed contaminated by infected pigeons.

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