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Orf is a viral disease caused by a parapoxvirus, affecting primarily sheep and goats and causes severe economic losses. In this study, a total of 500 sheep from a farm in El-Beheira Governorate, Egypt were examined during spring, 2014. Out of them, 30 sheep showed clinical signs of orf virus infection. The diseased sheep exhibited proliferative lesions on the lips and around the mouth. Polymerase...