The health department is advising residents to throw out all packages of Nestle Toll House cookie dough. Cooking the dough will not ensure safety because individuals could still get the bacteria on their hands or on other cooking surfaces. Nestle U.S.’s baking division has issued a voluntary recall of the product.

“Cookie dough, whether purchased in a tub from the store, or made at home from scratch, should not be eaten raw,” said Carlota Medus, an epidemiologist with the state health department, in a statement announcing the illnesses.