About 23% of those sickened were hospitalized, but no deaths have been reported, according to the CDC.
Health officials say the first cases identified date to November 1. The preliminary investigation shows a possible link to alfalfa sprouts.
"Preliminary results of this investigation indicate a link to eating alfalfa sprouts at a national sandwich chain," the CDC said in a statement.
In Illinois, where the bulk of cases have been identified, the state Department of Public Health says many of 50 sickened residents reported eating alfalfa sprouts at locations of Jimmy John's.
The founder of Jimmy John's said test results of sprouts from its main supplier tested negative.
In a letter sent to all Jimmy John's franchises, founder Jimmy John Liautaud said store locations have all come up negative for the bacteria as well.
"As a goodfaith and goodwill gesture I am asking Illinois stores to pull sprouts until the state can give us some better direction," the letter states. "We are working closely with the state and they are doing a darn good job in helping find the source. Again, no source has been found yet, this is a precautionary measure."
According to the CDC, Illinois has 50 cases, Missouri reports 14 cases, Indiana reports 9, Wisconsin has three and Pennsylvania reports two. Connecticut, Georgia, Hawaii, Iowa, Massachusetts, New York, South Dakota, Tennessee, Texas, Virginia and the District of Columbia all have one confirmed case.
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