Avoiding Mexican Fast Food

I think I will be avoiding Mexican fast food restaurants this weekend while I am in the Twin Cities. First there was the E. coli cases in several Taco Bell restaurants. Now some Taco John's restaurants are being cited as the source of severe diarrhea and stomach cramps for several people in Cedar Falls, Iowa, with E. coli being blamed preliminarily. From these outbreaks, I think it would be prudent to just avoid such establishments altogether for the immediate future. I may be overly cautious, but getting these symptoms while away from home would really suck!