The FDA has escalated Alma Pak International LLC's organic blueberry recall to a Class I, the most severe classification, after Listeria monocytogenes was detected. 400 boxes were recalled after routine testing.

There’s a “reasonable probability” the recalled fruit will cause serious illness or death, the U.S. Food and Drug Administration warns.

FDA issues highest-risk recall for contaminated blueberries linked to deadly listeria bacteria. Safety details, symptoms, and nationwide food recall trends explained in plain language.