From City of Chicago Press Release:

City Health Dept. Continues Investigation of Food Borne Illnesses

As of noon today, a total of 678 people have reported that they became ill after they ate food purchased from the Pars Cove Persian Cuisine booth—up from the 636 reported Tuesday.
Eighty-five of the 678 are laboratory-confirmed cases of salmonellosis, with more results pending—up from the 66 reported yesterday. Of the 85, 47 have been identified as Salmonella Heidelberg, one of the more common Salmonella serotypes in the United States.  A total of 25 people are known to have been hospitalized—unchanged from what CDPH reported on Tuesday.
Most of the individuals live in the Chicago area; a few are from downstate and a few are from other states.