In Chipotle's filings with the Securities and Exchange Commission published yesterday, the food chain divulged it was served with a Federal Grand Jury Subpoena focused on a Simi Valley location's norovirus outbreak in August 2015.
The outbreak reportedly sickened more than 200 patrons and workers.
Despite the temporary closure of dozens of Chipotle restaurants due to more dangerous E. coli outbreaks, this is the first time the chain is at the center of a criminal investigation.
Michelle M. Mello, JD, Ph.D., Professor of Law and Professor of Health Research and Policy, Stanford University
Michael Doyle, Ph.D.,Regents Professor of Food Microbiology & Director, Center for Food Safety, University of Georgia