Concerns for E. coli contamination prompt nationwide ground beef recall KWCHWalmart ground beef recalled for potential E. Coli contamination, 16000 pounds affected USA TODAYBeef Recall as Dire Warning Issued NewsweekCargill Meat Solution recalls 16,000+ lbs. of ground beef for E. Coli contamination risk WAVY.comRECALL: Ground beef sold at Walmart has possible E. coli contamination Dayton Daily News