E. Coli: What You Need to Know Most E. coli strains are harmless and considered an important part of a healthy human intestinal tract. But the one behind the Chipotle cases, known as STEC 026, is a different story. Here's what you need to know. Photo/Illustration: Arielle Ray

The mystery of Chipotle's E. coli outbreak is stumping scientists Chipotle's E. coli outbreak was first reported in October. Three months and thousands of tests later, health investigators still can't find the source.

Everything You Need To Know About The Latest E. Coli Outbreak In the past few weeks, Escheria coli (E. coli) has been responsible for several attention-grabbing recalls.

Everything You Need To Know About The Latest E. Coli Outbreak In the past few weeks, Escheria coli (E. coli) has been responsible for several attention-grabbing recalls. First, there was Chipotle. Then, there was Costco's chicken salad. And, Starbucks' turkey panini.

Starbucks Just Recalled A Product For E. Coli Contamination First came the Chipotle E. coli.

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Chipotle could reopen stores as E. coli outbreak remains unsolved About 40 people in the Northwest have gotten E. coli in the outbreak associated with Chipotle.

Chipotle could reopen stores as E. coli outbreak remains unsolved All tests of food from Chipotle stores in Washington and Oregon came back negative for E. coli, health official says; restaurants could reopen this week

More cases of E. coli in Washington, Oregon expected SEATTLE (AP) — Health officials expect the number of people sickened by an E. coli outbreak linked to Chipotle restaurants in Washington state and Oregon to grow while they investigate the cause of the infection. As of…