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Chipotle Mexican Grill's restaurants nationwide will be closed part of the day on Feb. 8 for an all-hands meeting that was announced earlier this week.

Details about the meeting, including the time and length of the closures, are being finalized, said Chris Arnold, a spokesman for the Denver-based operator of fast-casual Mexican restaurants.

"We are hosting a national team meeting to thank employees for their hard work through this difficult time, discuss some of the food safety changes we are implementing and answer questions from employees," Arnold said via e-mail.

A series of foodborne-illness outbreaks in recent months sickened hundreds of patrons, triggered lawsuits and a federal criminal subpoena, and sent Chipotle's sales and stock reeling.


Shares fell more than 45 percent off Chipotle's all-time high of $757.77 set Aug. 5.

Investors' concerns seemed to be allayed earlier this week after Chipotle executives announced a series of developments: That they expected the U.S. Centers for Disease Control and Prevention would wrap up its investigation of E. coli linked to the company's restaurants; the implementation of rigorous food-safety measures; and expansion plans that remained on-track.

Chipotle executives also said they would schedule an all-company meeting in February and launch a marketing campaign that month to win back customers.

Alicia Wallace: 303-954-1939, This email address is being protected from spambots. You need JavaScript enabled to view it. or @aliciawallace

2015 chipotle outbreaks

July: Five patrons sickened at a Seattle Chipotle in an incident linked to E. coli, the Oregonian reported. That restaurant since has been closed.

August: Norovirus linked to illnesses of 207 customers and employees at a Simi Valley, Calif., restaurant, according to Venture County, California, health officials.

September: Salmonella Newport outbreak at nearly two dozen Chipotle locations in Minnesota. The Minnesota Department of Health reported 64 people were sickened by salmonella. Tomatoes were identified as the source.

October-December: Two outbreaks of Shiga toxin-producing E. coli 026 linked to Chipotle restaurants in 12 states. In the larger outbreak, covering nine states, at least 53 people reported illnesses. Later, five people — one from Kansas, one from North Dakota and three from Oklahoma — were reported ill from a more recent outbreak, according to the Centers for Disease Control. In Washington and Oregon, 43 restaurants shut down and sanitized before reopening.

December: A Boston Chipotle was temporarily closed after a norovirus outbreak reportedly sickened 136 people, including members of Boston College's men's basketball team.