The case count in the investigation of an outbreak of E. coli illnesses O26 related to Chipotle restaurants in Washington and Oregon includes 31 Washington residents and 18 Oregon residents.

Five Chipotle restaurants in Washington are associated with this outbreak: Hazel Dell, 7715 NE 5th Avenue, Suite 109, in Vancouver; 1404 Broadway Avenue and 4229 University Way NE in Seattle; 512 Ramsey Way 101 in Kent; and 1753 S. Burlington Blvd. in Burlington.

In Oregon 18 illnesses have been located in Multnomah, Clackamas, Washington, Columbia​, Linn and Lane counties. Associated restaurants: Cascade Station (9687 NE Cascades Pkwy), Washington Square (9120 SW Hall Blvd), Lake Oswego (8 Centerpointe Dr), Tanasbourne (2048 NW Stucki Ave), Gresham (2065 NE Burnside Rd) and Hazel Dell (7715 NE 5th Ave, Vancouver, WA).