Travis,
I'm glad to hear they found what it was. I'm sure it was really scary. A co-worker had that same problem last winter and it was a day before she went to the emergency room. It really had her down for a few days, and it took a couple of weeks for her to regain her energy. They too figured it was either from improperly cleaned vegetables or unwashed food handler's hands.
I hope your trip back home will be uneventful and your wife is feeling a lot better.
Regards,
Ken
