The "stomach bug" norovirus is behind the latest outbreak of foodborne illness linked to Chipotle, according to health officials. This week, a Chipotle restaurant in Sterling, Virginia, temporarily closed down after multiple customers reported falling ill with vomiting, diarrhea and stomach pains after eating there. A spokesman said the restaurant chain suspected that norovirus was to blame because the symptoms of the sick customers were typical of people infected with this virus, according to Reuters.