More than 500 people in the Midwest were infected with Cyclospora parasites after eating bagged salads with iceberg lettuce, carrots and red cabbage.
Fresh Express expanded a recall for bagged salads sold at Walmart and other stores after hundreds of people got parasite infections.
Health officials have linked an outbreak of E. coli illnesses to Fresh Express Sunflower Crisp Chopped Salad.
Consumer Reports found Listeria bacteria in 6 samples of kale, lettuce and spinach from major grocery stores such as Costco, Whole Foods, Hannaford and Acme.
Trader Joe's has recalled certain ready-to-eat fresh salads because the corn ingredient may be contaminated with Listeria and Salmonella.