The Food and Drug Administration announced Tuesday that the recall stemming from an alert about rotisserie chicken salad sold at Costco being contaminated with E. coli has spanned more than a dozen states and includes products sold at major grocery chains and retailers.

An investigation determined that the cause of Costco's chicken salad recall last week was contaminated celery that had been produced by California-based Taylor Farms Pacific, according to Fox News.

The FDA expanded the recall of food products on Tuesday, which now includes 155,000 items such as salad kits, vegetable trays and other prepared foods sold at stores and retailers like Walmart, Sams Club, Albertsons, 7-Eleven, Target and Safeway.

Starbucks has also been affected by the recall, purging more than 45,000 holiday turkey sandwiches in California, Oregon and Nevada. 

While the products were primarily distributed in western states, stores in Georgia, Arkansas, Nebraska and Hawaii are also affected.

Nineteen people across seven states have been infected by eating Costco's chicken salad so far, according to the Centers for Disease Control and Prevention.

The outbreak comes on the heels of another recent E. coli outbreak at Chipotle restaurants. However, health officials say that the two aren't related since the strain of bacteria linked to Costco is more severe than the one linked to Chipotle.