they provided the pizza for a birthday party at the phoenix zoo on Saturday, October 12th. Most of us who attended the party got extremely ill at some point after the party. For me and my 2 grandsons, it didn't happen until after midnight on Monday morning. Most of the party goers fell ill at around the same time. The guests are from different households, different cities, etc. The only thing we have in common is that we ate that pizza that day.