Analysis of information sources in references of the Wikipedia article "Escherichia coli O157:H7" in English language version.
E. coli O157:H7 was first described as a cause of human illness and associated with undercooked ground beef in 1982 (1).
In 1982, E. coli O157:H7 was initially identified as the cause of bloody diarrhea from eating undercooked or raw hamburger meat that was contaminated with the bacteria.