SALINAS, Calif. (AP) — A major California lettuce grower has recalled about 22,000 cartons of romaine lettuce over concerns that the product may be tainted with salmonella.

Tanimura & Antle Inc. of Salinas issued the voluntary recall Wednesday for cartons of bulk or wrapped romaine marked with the lot code 531380. The lettuce was harvested between June 25 and July 2, and sold to retail, wholesale and food service outlets across the United States, Canada and Puerto Rico.

Company officials say technicians are reviewing the firm's food safety procedures.

Salmonella can cause serious and sometimes fatal infections, especially in young children, the elderly and those with weakened immune systems. No illnesses have been reported.

List of states in which lettuce sold by Salinas, Calif.-based Tanimura & Antle Inc. was distributed:

— Alabama, Arkansas, California, Colorado, Connecticut, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Texas, Massachusetts, Louisiana, Pennsylvania, Tennessee, North Carolina, Michigan, Missouri, Nebraska, New Hampshire, New Mexico, Nevada, Ohio, Oregon, Utah, Virginia, Wisconsin, Wyoming.

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