Yaba tumour

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Yaba tumour

(Science: oncology, virology) A poxvirus-induced neoplasm of african monkeys caused by the yaba monkey virus, a member of the family poxviridae.

It is associated with tumour-like growths occur chiefly on the head and limbs. The tumours are benign and the natural disease has been reported only in Africa in monkeys kept outdoors.