The Illinois Department of Public Health announced Thursday that 34 cases of salmonella have been confirmed. All are recovering, including 14 who were hospitalized.

They reported eating at Subways in 14 counties: Sangamon; Schuyler; Christian; Bureau; LaSalle; Cass; Champaign; Peoria; Shelby; Warren; Macon; Ogle; Fulton; and Tazewell.  Illnesses are reported to have started between May 14 and 25.

Subway officials have been cooperating with the investigation. Although there has been no confirmed association with a specific product, the restaurant chain has voluntarily replaced lettuce, green peppers, red onion and tomatoes with new, fresh produce.