UPATE - 12-21-15 - CDC reports that a total of 53 people have become infected in 9 different states. From the CDC report - "The number of ill people reported from each state is as follows: California (3), Illinois (1), Maryland (1), Minnesota (2), New York (1), Ohio (3), Oregon (13), Pennsylvania (2), and Washington (27)."
Update - 11/4/15 - Reports have the total number of cases at 35 (as of Tuesday, 11/3) for those infected by E. coli O26.
Chipolte restaurants closed 43 west coast restaurants because of a potential link to E. coli outbreak. As of the Oct 31st, there were 22 reported illnesses. The ingredient source of E. coli has not yet been identified.
This is the third major outbreak associated with the chain. In September, a California location was involved in a Norovirus outbreak where 80 individuals become ill. In the same month, 22 locations were linked to 64 cases of Salmonella infection. In this case, tomatoes were pinned as the source.
This has had a impact on the business as the stock price has dropped to a 4 month low.