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.

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.

An ongoing Listeria outbreak has mostly affected people living in long-term care facilities and people who were already hospitalized prior to becoming sick from the infection.