Published: Sep 29, 2011 8:48 PM EDT

SALINAS, Calif. (AP) - A California farm is voluntarily recalling bags of chopped romaine lettuce because of possible contamination with listeria, though no illnesses have been reported.
    
True Leaf Farms, of Salinas, announced Thursday that it's recalling 90 cartons that were shipped to an Oregon food service distributor. From the distributor, it might have gone to at least two other states, Washington and Idaho.
    
The Food and Drug Administration notified the company that a sample taken as part of a random check tested positive for listeria.
    
The recall covers product with a "use by" of Sept. 29. The bag and box code is B256-46438-8.
    
Listeria rarely shows up in produce, but an outbreak linked to cantaloupe from a Colorado farm has caused at least 72 illnesses, including up to 16 deaths, in 18 states.

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