Blueberry recall elevated to highest level due to listeria risk

A blueberry recall has been upgraded to the highest possible level over contamination concerns.

Alma Pak International LLC voluntarily recalled 400 boxes, weighing 30 pounds each, of its organic blueberries June 9 because they tested positive for Listeria monocytogenes, a disease-causing bacteria, during routine testing, according to the U.S. Food and Drug Administration (FDA).