Newcastle Disease_Clinical Signs & Postmortem Lessions

Causative Agent: "Paramyxovirus" System Affected By This Disease: Digestive System, Respiratory System and Nervous System. Clinical / Anti-mortem Signs:   Torticollis of neck (it may be upward/downward). Greenish-white mucus like diarrhoea. Lameness. Nasal and Ocular discharge. Rales of thick mucus from mouth. Pasting on vent area. Gasping (difficulty in breathing). Sticky nose. Wing / Leg paralysis or