They include some types of chicken salad and sandwiches sold under the name Gourmet Boutique, and several frozen wraps and burritos sold under the names "Jan's" and "Archer Farms," among other brands.
The problem was discovered through sampling by federal food safety inspectors and Florida agriculture officials, the USDA said.
There have been no reports of illnesses associated with the recalled foods so far, but the bacteria can potentially cause Listeriosis, an illness that can give people a high fever, headache and nausea. People with depressed immune systems could also suffer a fatal infection.
Gourmet Boutique said in a recorded phone message that it had
made "environmental changes" at its plants to prevent a repeat of
the problem. "We are confident of the safety and quality of our
products," the recording said.
