Chipotle store in Mass. closed on norovirus fears

The closure comes as Chipotle fights to win back customers with stepped up marketing following a series of food scares that sickened customers around the country.

According to the Centers for Disease Control and Prevention, norovirus is very contagious and the most common cause of foodborne outbreaks in the United States.

Employees were told to watch for symptoms such as nausea, vomiting, explosive diarrhea, yellowing of the skin and eyes and dark urine.