A California company has issued a recall for its vegetable mix Montana health officials identified as the source of E. coli in Costco’s rotisserie chicken salad that has been linked to an outbreak of 19 illnesses across seven states.

Taylor Farms Pacific, Inc. recalled a celery and onion diced blend out of an abundance of caution because the product tested positive for E. coli. The sample tested by officials in Montana was used in a Costco Rotisserie Chicken Salad.

According to FDA, the recalled products were primarily used to make sandwiches, salads and wraps and were sold at retailers including Target, Walmart, Safeway, Raley’s and others in addition to Costco.

As of November 27, 19 people with this outbreak strain of E. coli were reported to be infected in seven states, including Washington, California, Montana, Utah, Colorado, Missouri and Virginia. The CDC investigation found 14 of the infected people purchased or ate the chicken salad product in the week before their illness started.

More information on the recall can be found here.