USDA Photos

Drooling and smacking of lips are early signs of the disease.

Ruptured blister producing erosive lesion of the gum.

Ruptured blister with blanching of tissue in the interdigital space.

Recently ruptured blister on dental pad.

Newly-formed blister on hog's snout.

Blisters on tongue have ruptured and begun to slough.

Ruptured blisters on dental pad.

Ruptured lesion with necrosis on cow teat.

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