|Outbreak: Jack In The Box Hamburgers|
|Product: Hamburgers||Investigation Start Date: 01/12/1993|
|Location: Multi-State Outbreak||Etiology: E. coli O157|
|Earliest known case onset date: 11/18/1992||Latest case onset date: 02/21/1993|
|Confirmed / Presumptive Case Counts: 503 / 229||Positive Samples (Food / Environmental / Water): 0 / 0 / 0|
|Hospitalizations: 151||Deaths: 3|
This was the largest outbreak of E. coli O157 infections ever documented in the United States, and it injected this pathogen—and threats to food safety in general—into popular consciousness.