2014 Outbreak of Shiga Toxin E. coli (STEC) at State Fairgrounds, Oklahoma
In April 2014 the Oklahoma State Department of Health investigated a spike of Shiga toxin E. coli (STEC) among at least a dozen people who had attended agricultural events around the state. One group of patients attended the Oklahoma Youth Expo at the State Fairgrounds. As of April 3, 2014 investigators had not identified a source.