The frozen shakes were served at hospitals and long-term care facilities, sickening 38 people and resulting in 11 deaths in 21 states, according to the FDA.

The supplemental shakes are labeled under the brands Lyons ReadyCare and Sysco Imperial and were sold to institutional customers, including hospitals and long-term care facilities, officials said.

The FDA announced that a food distributor is recalling all ReadyCare and Sysco Imperial Frozen Supplemental shakes, typically sold to long-term care facilities, over listeria concerns.