Changes

Clinical signs develop rapidly; the disease is often fatal within 2-5 days. The skin becomes discoloured, turning red to blue before death. Expressed lesions vary between animals.

Clinical signs develop rapidly; the disease is often fatal within 2-5 days. The skin becomes discoloured, turning red to blue before death. Expressed lesions vary between animals.

Survivors or those affected by the chronic form of the disease show less severe clinical signs of weight loss and depression, they become lame with arthritis, develop congestive heart failure, pericarditis or intestinal obstruction due to formation of adhesions. Pregnant sows may abort their fetuses.  

Survivors or those affected by the chronic form of the disease show less severe clinical signs of weight loss and depression, they become lame with arthritis, develop congestive [[:Category:Heart Failure|heart failure]], [[Pericarditis|pericarditis]] or intestinal obstruction due to formation of adhesions. Pregnant sows may abort their fetuses.

===Pathology===

===Pathology===