Marek’s disease

A highly contagious, viral-induced (caused by Gallid herpesvirus 2) neoplastic process affecting poultry.
Clinical findings
• Classical Marek's disease—causes asymmetric paralysis of one or more limbs and, with vagus nerve involvement, difficulty in breathing or dilation of the crop.
• Acute Marek's disease—an epidemic illness that affects uninfected or unvaccinated flocks, characterised by depression, paralysis and death in a large number of birds (up to 80% mortality).
• Cutaneous Marek’s disease— causes round, firm lesions at the feather follicles.
• Other findings—immunosuppression, atherosclerosis, ocular lymphomatosis.

单词	marek’s disease
释义	Marek’s disease Marek’s disease A highly contagious, viral-induced (caused by Gallid herpesvirus 2) neoplastic process affecting poultry. Clinical findings • Classical Marek's disease—causes asymmetric paralysis of one or more limbs and, with vagus nerve involvement, difficulty in breathing or dilation of the crop. • Acute Marek's disease—an epidemic illness that affects uninfected or unvaccinated flocks, characterised by depression, paralysis and death in a large number of birds (up to 80% mortality). • Cutaneous Marek’s disease— causes round, firm lesions at the feather follicles. • Other findings—immunosuppression, atherosclerosis, ocular lymphomatosis.
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