Over the past 10 years, nuts and peanut butter have been associated with a number of E. coli O157:H7 and Salmonella outbreaks.  In total, the related outbreaks have sickened thousands across the U.S. and internationally.   Starting most recently and working backward:

Amira Enterprises, Shelled Walnuts, E. coli O157:H7.  In April, 2011, Canadian health officials…