Found another article that states this cow had a rare form of the disease caused by a natural mutation. Same as the cows in Texas and Alabama from several years back.
With this case, that makes 4 total in this country, ever. Since this is a non-communicable disease and is only accessible to another cow from an infected cow by eating byproducts from an infected animal, it is extremely unlikely that we'll see any kind of "epidemic" unless the facility this cow came from was utilizing said byproducts. Given that this disease was caused by a mutation and was not the standard form of BSE, I'd say people who are up in arms freaking out are highly over-reactive.