said . Watch why it 's important not to eat the nuts '' An investigation is under way into how the pistachios came to carry the bacteria . Salmonella can cause serious and sometimes fatal infections in young children , frail or elderly people , and others with weakened immune systems . Acheson stressed at a news conference Monday that the potential problems with pistachios were unrelated to this year 's recall of peanut products , including peanut butter . The pistachio investigation also involves the California Department of Public Health and the Centers for Disease Control and Prevention in Atlanta , Georgia . Setton Farms told the FDA that it anticipates recalling about 1 million pounds of products nationally in the next few days , which covers its crop output last year . Several people have told the FDA that they suffered gastrointestinal illnesses after eating pistachios , and the CDC was doing a genetic analysis , looking for any link between the people and salmonella strains , Acheson said . He said there could be some results by the end of the week . He said the FDA is `` ahead of the curve '' in the current
WASHINGTON -LRB- CNN -RRB- -- If you have a stash of pistachios in your house , pistachio ice cream in your freezer or trail mix in your backpack , do n't eat any of it . The FDA says it and the California Department of Public Health are taking `` a proactive approach . '' Wait until an inquiry into possible salmonella contamination is further along , advises FDA Associate Commissioner David Acheson . Kraft Foods Inc. notified the U.S. Food and Drug Administration last Tuesday that it found salmonella in roasted pistachios during routine testing . The nuts were traced to Setton Farms in Terra Bella , California , about 75 miles south of Fresno . Setton announced a recall , Kraft removed its Back To Nature Trail Mix from store shelves , and Kroger -- a grocery chain with stores in 31 states -- recalled Private Selection shelled pistachios from its retail stores . See the FDA 's complete recall list `` Ultimately , the question is what should consumers do , and our advice to consumers is that they avoid eating pistachio products and keep checking the FDA Web site for the latest information , '' Acheson