August 1, 2019 7:35 am Tests of E. Coli Outbreak at County Fair Inconclusive on Source: County Investigators say they may never find the source of a deadly E. coli outbreak at the San Diego County Fair. US & World Videos 0:28 A Vermont state trooper plunges into icy pond to rescue 8-year-old girl 2:59 Keep these travel etiquette tips in mind this holiday season 2:20 Bodies of Missing Men Found in Rubber Bins Inside Storage Unit 1:42 Hundreds of Golden Retrievers Walk a Mile for the Official Boston Marathon Dog 1:51 Typewriter Shop Owner Receives Gift From Tom Hanks