More than 40 people have become ill after eating at a Garden City sandwich shop.

The Finney County Health Department issued a news release Saturday saying it’s working in conjunction with Kansas Department of Health and Environment, Kansas Department of Agriculture and Jimmy John’s to find the cause of the numerous cases of gastrointestinal illnesses that have been associated with eating at Jimmy John’s in Garden City.

Those who’ve become sick have eaten at Jimmy John’s Gourmet Sandwiches, 503 East Kansas Avenue, on December 11, 2013 or after, according to Finney County Health Department Administrator Ashley Goss.

Currently the Health Department has been notified of more than 40 cases of the gastrointestinal illness. The symptoms are much like the stomach flu, including vomiting, diarrhea, and fever in some cases, muscle and joint aches as well as fatigue.

The Kansas Department of Agriculture has conducted their inspection of the facility as required.

Any findings have been corrected and require no further action.