<prompt> All are bacterial infections exceptEcthyma pyogenicumEcthyma gangrenosumEcthyma contagiosumBullous Impetigo  <response>: Poxviruses Orf ecthyma contagiosum; Orf virus; genus Parapox: - It is a result of contact with infected animals sheep, goats, or reindeer; usually on uddersperioral areas of ewes. Develop one to few lesions at contact site usually hands. RFs: ceain jobs shepherds, butchers, and veterinarians . Six lesion stages: maculopapular umbilicated - targetoid - acute weeping nodule - regenerative nodule w thin crust and black dots - papillomatous - regressive crust overlying resolving lesion. Self-resolves . Diagnosis histology depends on stage or PCR. Ref:- Review of Dermatology by Alikhan; pg num:-285 