Orf Virus Infection in Humans --- New York, Illinois, California, and Tennessee, 2004--2005
... Vet Rec 1998;143:237--40. De la Concha-Bermejillo A, Ermel RW, Zhang MZ, Guo J.
Contagious ecthyma (orf) virulence factors and...
http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5503a1.htm