St. Louis, MO, 2016-Jul-14 — /EPR Retail News/ — General Mills is recalling two flavors of Betty Crocker cake mixes in connection with General Mills’ voluntary recall of flour containing E. coli O121. Although most strains of E. coli are harmless, others can make you sick. E. coli O121 is a potentially deadly bacterium that can cause bloody diarrhea and dehydration.…