"The epidemiologic evidence collected during this investigation suggested that a common meal item or ingredient served at Chipotle Mexican Grill restaurants was a likely source of both outbreaks," the CDC said. "The investigation did not identify a specific food or ingredient linked to illness." When the CDC declares an outbreak over, it means they've officially closed their investigation, according to a report by The Wall Street Journal ahead of the CDC's update.
All of this comes amid Chipotle's big push to lure customers back (with free food!) into the folds of its warm tortillas, and just days before the company will close all of its restaurants for a few hours on February 8th for new food safety meetings and training. Chipotle's stock, which has collapsed like a foil-less burrito in recent weeks, was already trading up almost 4% on Monday morning thanks to the news. However, Chipotle isn't exactly out of the woods, considering a recent criminal investigation into a norovirus outbreak at a California Chipotle restaurant, as well as facing pending civil lawsuits.