The products were distributed to hospital patients and long-term care residents by foodservice business Lyons Magnus.

The FDA says an onsite investigation at Prairie Farms Dairy revealed three environmental swabs taken in the processing area tested positive for listeria monocytogenes.

Frozen supplemental shakes have been linked to a nationwide Listeria outbreak that have led to 38 illnesses and 12 deaths.

The U.S. Food and Drug Administration and the Centers for Disease Control and Prevention said on Monday the agencies were investigating a multi-state outbreak of listeria infections linked to frozen supplemental shakes manufactured by Prairie Farms Dairy Inc.

An ongoing listeria outbreak credited with 11 deaths is linked to frozen supplemental shakes. Here’s what you should know: What shakes have been recalled and where did they go? The shakes, sold in 4-ounce cartons under the brands Lyons ReadyCare and Sysco Imperial,

Twelve deaths have been reported as part of an outbreak of Listeria monocytogenes infections linked to frozen supplemental shakes, the US Food and Drug Administration said Monday. At least 38 people in 21 states had been infected,