Sliced apples distributed to fast-food and grocery chains nationwide are among packaged products being recalled due to possible listeria contamination.
 
   No illnesses have been reported, but listeria was found on equipment used to produce apple products by Missa Bay LLC, owned by Ready Pac Foods Inc. of Swedesboro, N.J.
 
   Packaged apple slices distributed to McDonald's and Burger King in some states are included in the recall as are packaged food containing apples distributed to Wawa convenience store and Wegman's grocery chains and some "Ready Pac" products.
 
   Recalled products have use-by dates of July 8 through Aug. 20. Missa Bay announced the voluntary recall on Friday, saying the food went to 36 states and the District of Columbia. People may contact Ready Pac at 800-800-7822 or visit www.readypac.com.