I guess in this case, incidentally, it's apparently turned out not to necessarily have anything to do with food crossing national borders, anyway: I caught on the news that whatever happened, it came from within Germany, and that's where the cases are, so unless overall EU standards apply there, that's what that is.
Edit: No, wait, that's not what the story is, either. Mea culpa: I was relying on the closed captions when I watched the earlier show (Loud air conditioner) and missed a key paragraph there: there are in fact cases all around, and they still haven't ruled our any origins of it.