The U.S. Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC) are investigating a multi-state listeria outbreak linked to frozen supplemental shakes made by Prairie Farms Dairy Inc.
As of February 24, 2025, 38 cases of listeria monocytogenes infection have been reported across 21 states. According to the FDA, 37 people have been hospitalized, and 12 deaths have occurred.
The recalled products include frozen supplemental shakes under the brands Lyons ReadyCare and Sysco Imperial. These shakes were distributed to hospitals and long-term care facilities nationwide.
Listeria bacteria can contaminate various foods, causing symptoms like fever, muscle aches, and nausea. Symptoms typically appear within two weeks of consuming contaminated food but can emerge as early as the same day or up to 10 weeks later.
As part of the investigation, the FDA conducted an onsite inspection at Prairie Farms’ facility in Fort Wayne, Indiana. Environmental and product samples were collected during the inspection, with three environmental swabs from the processing area testing positive for listeria monocytogenes.
Prairie Farms Dairy has yet to respond to requests for comment.
The FDA and CDC are urging healthcare facilities to stop using the affected shakes immediately and advising consumers to seek medical care if they experience symptoms of listeria infection.
The investigation is ongoing as health officials work to identify the full scope of the contamination and prevent further cases.
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