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*Piglets from non-immune sows are predisposed.
*Piglets from non-immune sows are predisposed.
*Skin trauma, such as due to fighting, allowing entry of infective organisms is also considered a risk factor in this disease.
*Skin trauma, such as due to fighting, allowing entry of infective organisms is also considered a risk factor in this disease.
===Pathology===
[[Image:f00348.jpg]]
===Pathogenesis===
===Pathogenesis===