FORT WORTH, Texas (AP) — American Airlines has suspended use of a caterer at Los Angeles International Airport after listeria was found in the caterer’s facility, but Delta Air Lines continues to get meals from the kitchen.

A spokeswoman for Atlanta-based Delta said Thursday that the kitchen operated by Gate Gourmet complies with local and federal regulations.

READ MORE: COVID Reopening: San Mateo County Returns to Yellow Tier; Bars To Resume Indoor Service

The catering company said it serves other airlines at the airport but won’t identify them. No other airlines have announced that they are stopping service from the Gate Gourmet facility.

A Gate Gourmet spokeswoman said that listeria was found in floor drains but not on food-preparation surfaces. She said the kitchen was treated and remains open and continues to serve other airlines.

READ MORE: San Francisco Supes To Vote On Ghost Gun Ban

A spokesman for Fort Worth-based American said the airline decided to stop taking food from the Los Angeles kitchen because of concern over progress in Gate Gourmet’s plan to correct the listeria problem. He said the airline is not aware of contamination at any other Gate Gourmet facilities.

Both American and Delta said they have not received any reports of passengers becoming ill from food from the Los Angeles facility.

Listeria is a bacteria that can cause fever and diarrhea, and more dangerous complications in pregnant women, including miscarriages and stillbirths. About 1,600 people are sickened by listeria each year, according to the U.S. Centers for Disease Control and Prevention.

MORE NEWS: Berkeley Police Arrest Suspect for Series of Anti-Semitic Hate Crimes

Gate Gourmet’s parent company is controlled by Chinese conglomerate HNA Group, which paid $1.5 billion for the Swiss company last year.