WASHINGTON—Saying it was vitally important that citizens avoid consuming any of the affected items, the U.S. Food and Drug Administration issued a nationwide recall of all food Wednesday. “We are asking all Americans to return any edible products they own to the store where these items were purchased or to discard such items immediately,” said FDA commissioner Margaret Hamburg at a morning press conference, specifying that under no circumstances should Americans eat grains, meats, produce, nuts, dairy products, processed foodstuffs, sweets, spices, or any other source of sustenance, nor should they feed any of these foods to animals or leave them within the reach of children. “If you are eating something right now, please discontinue doing so. We will let you know when it is okay to consume food again.” Hamburg noted that salt, baking soda, and all foods manufactured before 2002 were unaffected by the recall.