CDC investigating five new cases of E. coli linked to Chipotle

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Chipotle Falls on More E.Coli Jitters

(Reuters) - The Centers for Disease Control and Prevention (CDC) said it is investigating five new cases of an E. coli infection linked to Chipotle Mexican Grill Inc.

The outbreak is of a "different, rare DNA fingerprint" of the Shiga toxin E. coli O26, the CDC said on Monday, adding it is unclear whether it is related to the outbreak that started in October.

SEE ALSO: Angry Boston mom hits Chipotle with its first norovirus lawsuit

Of the five cases reported, one each are from Kansas and North Dakota and three from Oklahoma, the CDC said.

The illnesses started between Nov. 18 and Nov. 26 and all five patients reported eating at Chipotle outlets in the week before falling sick, the CDC said.

Recent E.coli outbreaks:

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CDC investigating five new cases of E. coli linked to Chipotle
BOSTON - AUGUST 23: Colony of E. coli cells are grown in the synthetic biology lab at Harvard Medical School in Boston on Tuesday, August 23 2011. (Photo by Wendy Maeda/The Boston Globe via Getty Images)
ELIOT, ME - MAY 26: Kyler Dove, a seventh grader at Marshwood Middle School in Eliot, stops to take a drink from one of the 11,520 water bottles donated to the school Tuesday, May 26, 2015 by Cumberland Farms. Home Depot and Hannaford have also made donations to the school as it manages the current E coli scare. (Photo by Jill Brady/Portland Press Herald via Getty Images)
PORTLAND, OR - MAY 23: A shopper looks for bottled water on nearly empty shelves at a New Seasons Supermarket May 23, 2014 in Portland, Oregon. Oregon health officials ordered Portland to issue a boil-water alert after three separate samples tested positive for E. coli, a bacterium that can cause severe gastrointestinal illness. (Photo by Natalie Behring/Getty Images)
Jack Kurtz, 10, right, and mother Paula Gillett pose for portrait in their Rockford, Illinois home, November 5, 2009. Jack recovered from a food-borne illness last year. The source of the E. coli that hospitalized him was never determined. (Photo by Lane Christiansen/Chicago Tribune/MCT via Getty Images)
Madison Sedbrook, 6, right, and her mother Cindy are in their home at Highlands Ranch on Tuesday. Madison's parents are suing because she got e coli from eating raw cookie dough recalled by Nestle. Hyoung Chang/ The Denver Post (Photo By Hyoung Chang/The Denver Post via Getty Images)
PHILADELPHIA - FEBRUARY 21: A BJ's Wholesale Club awaits customers on February 21, 2007 in Philadelphia, Pennsylvania. Yesterday, the giant wholesaler announced a voluntary recall of prepackaged Wellsley Farms mushrooms, due to possible trace amounts of E.coli. No cases of the illness have been reported. (Photo by Jeff Fusco/Getty Images)
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"We are in the process of implementing reassessed programs including high-resolution testing of ingredients," Chipotle said.

Reports of new illnesses linked to the October outbreak have "slowed substantially", the CDC said.

Chipotle is grappling with a multistate E. coli outbreak that has sickened about 52 people in nine states and battered the burrito chain's sales and stock price.

The agency also said that a new case of E. coli was reported in Pennsylvania, but noted that the person had not eaten at a Chipotle restaurant.

Chipotle's shares were down 3.2 percent at $523.60 in late afternoon trading.

Learn more about the Chipotle E. coli outbreaks:

Chipotle E. Coli Outbreak Expands To 6 States

More on the Chipotle saga:
Chipotle CEO apologizes over illnesses, vows to be 'safest place to eat'
How Chipotle plans to make its food safer after a scary year
Boston College now says 80 students ill after eating at Chipotle

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