The parent and child, identified as T.H. and C.D in court documents, filed suit Thursday asking for unspecified damages.
The lawsuit names National Steak Processors, which operates as National Steak and Poultry, Inc. and is headquartered in Oklahoma. Efforts to reach a company spokesperson were unsuccessful Thursday.
The boy ate "a contaminated beef product manufactured and distributed" by National Steak in October 2009, the suit said. He developed "agonizing abdominal cramps and diarrhea that soon turned bloody," the suit said.
His parents rushed him to the hospital where he ultimately was diagnosed with infectious colitis and a stool specimen tested positive for E. coli. He recovered, but still has problems with gastro-intestinal pain, weakness and other health problems.