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etiology,
Newcastle disease virus
Species affected
Poultry
Transmission and pathogenesis
Aerosols and by ingesting contaminated water or food
Infected birds shed virus in exhaled air, respiratory discharges, and feces. Virus is shed during incubation, during the clinical stage, and for a varying but limited period during convalescence. Virus may also be present in eggs laid during clinical disease and in all parts of the carcass during acute virulent infections
Clinical signs
Characterized by high mortalities
Respiratory signs of gasping, coughing, sneezing, and rales predominate in low virulence infections. Nervous signs of tremors, paralyzed wings and legs, twisted necks, circling, clonic spasms, and complete paralysis may accompany, but usually follow, the respiratory signs in neurotropic velogenic disease
Diagnosis
Clinical signs, laboratory tests
Treatment and control
No treatment
Control by vaccination
Kavungya answered the question on May 6, 2019 at 12:59
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