Recall efforts are underway because a sample of cilantro from a farm near Phoenix tested positive for salmonella, according to the U.S. Food and Drug Administration.

Over 6,000 cartons of cilantro from Pacific International Marketing of Salinas, California, are being recalled.

Affected cilantro are bunches that were available for purchase between November 16 and December 10 in Arizona, California, Indiana, Massachusetts, Missouri, New Jersey, and South Carolina. Each bunch has a twist tie with “Pacific” on it. The herb was grown in the Phoenix area by Salt River Farming.

No illnesses have been reported. Consumers are urged to return the cilantro for a full refund from the place of purchase, and to call Pacific International Marketing at 831-755-1398 with any questions.

Symptoms of salmonella include fever, abdominal pain, nausea, vomiting, and diarrhea. Children, the elderly, and those with weakened immune systems are most susceptible to this serious and sometimes fatal illness.