US soup maker Campbell Soup has voluntarily recalled around 56,000 pounds of canned soup that may be contaminated with an undeclared allergen, the US Department of Agriculture's Food Safety and Inspection Service has announced. The products being recalled are 18.6-ounce cans labelled "Campbell's Select, Ready to Serve Soup, Italian Sausage with Pasta and Pepperoni, NEW." The recalled soup may contain cheese that is not declared on the label.