NAVLE® Question of the day

Several cattle within a herd present with high fevers, up to 106°F (41°C), feet-stomping, and salivation.

Some of the cows have vesicles in the interdigital space, and vesicles and denuded areas in the mouth. Necropsy of one of the cows shows white streaks on the heart in addition to the above findings.

Which one of the following choices is a top differential?

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