Chapter

Orf

David A. Warrell

in Oxford Textbook of Medicine

Published on behalf of Oxford University Press

Published in print May 2010 | ISBN: 9780199204854
Published online May 2012 | e-ISBN: 9780199570973 | DOI: http://dx.doi.org/10.1093/med/9780199204854.003.070527_update_001

Series: Oxford Textbooks

Orf

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Orf (‘ecthyma contagiosum’) is caused by an epitheliotropic parapox DNA virus of sheep and goats that is able to subdue the host’s immune response. It is an occupational zoonosis of people working with these animals. A painful papule/pustule develops, usually on a finger, the site of contact with lesions on the animal’s muzzle. Systemic effects are unusual, but include local lymphadenopathy, fever, erythema multiforme, and other generalized rashes. Spontaneous resolution within 6 weeks is usual. Multiple, giant lesions may develop in the immunosuppressed. Topical cidofovir is effective in severe cases....

Chapter.  1046 words.  Illustrated.

Subjects: Medical Microbiology and Virology ; Infectious Diseases

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