Chipotle's latest E. coli cases may remain a mystery

|About: Chipotle Mexican Grill, Inc. (CMG)|By:, SA News Editor

Chipotle (NYSE:CMG) says it may never pinpoint what caused the recent E. coli outbreak linked to two restaurants in Kansas and Oklahoma, as it no longer has any of the potentially contaminated ingredients that could determine the source of the infections.

Health officials investigating the cause of the restaurant's larger E. coli outbreak - which has sickened at least 50 customers in nine states since October - have cited similar hurdles.

According to Bespoke Market Intelligence, just 9.5% of consumers visited a Chipotle this month, down from 14.1% in November.

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