Probably virus

By the symptoms and course, we're now fairly sure the gut thing was a noro-virus (used to be called Norwalk virus) infection. These viruses hit hard and fast, and--if you're lucky and don't get dehydrated--depart fast too, faster than many others.

I suspect that I got it from produce I was chopping for the stock Thursday or soup Friday. I had washed off the celery for the soup, but instead of pulling off each stalk, I cut off the bottom end--then decided those stubs at the bottom would be a...