Infectious laryngotracheitis is a viral disease of adult birds caused by herpes virus and characterized by gasping, blood tinged nasal discharge, haemorrhage in trachea and deposition of cheesy exudates in larynx and trachea.
- Ingestion and inhalation are main source of transmission. Virus replicates in upper respiratory tract without viraemia.
- After 4-7 days virus goes to trigeminal ganglion and remains in latency.
- After long period activation of latent virus may occur.
- Characteristic symptoms are watery fluid from eyes, dyspnoea, sneezing, coughing, rales and gasping.
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