It is unclear what prompted the recall – retail testing – company testing – governmental testing?

The Canadian Food Inspection Agency (CFIA) is warning the public not to consume the Tanimura & Antle brand Romaine Lettuce described below because this product may be contaminated with E. coli O157:H7 bacteria.

The affected product, Tanimura & Antle brand Romaine Lettuce, produce of USA, is sold in a plastic package containing 1 head of lettuce. The package bears the UPC 0 27918. The affected product was sold at retail from August 8, 2012 through August 17, 2012.

This product has been distributed in Ontario, Manitoba, Saskatchewan, Alberta, British Columbia, Nunavut and Yukon.

There have been no reported illnesses associated with the consumption of this product.