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,

A nationwide recall has been issued for frozen nutritional shakes linked to a deadly listeria outbreak, according to the Food and Drug Administration. The shakes were sold to hospitals and long-term care institutions, including nursing homes.

The outbreak has infected 38 individuals, 37 of whom have been hospitalized, and 12 who have died A listeria outbreak linked to recalled frozen shakes has left 12 people dead, according to the U.S. Food and Drug Administration (FDA).