PORTLAND, OR – NOVEMBER 03: A general view of a Chipotle Mexican Grill store sign outside a location in downtown Portland on November 3, 2015 in Portland, Oregon. Chipotle Mexican Grill is temporarily closing more than 40 restaurants in and around Washignton and Oregon, as health officials investigate an E. coli outbreak that has gotten at least 22 people sick. (Photo by Steve Dykes/Getty Images)