A range of frozen milkshakes have been recalled after they were linked to 11 deaths and dozens of serious illnesses, many of them in long-term care homes and hospitals, the FDA confirmed on Friday.

The Food and Drug Administration recalled nutritional supplemental shakes tied to a deadly outbreak of listeria. The products were sold nationwide and primarily to hospitals and long-term care facilities.

The frozen supplemental drinks have been linked to an outbreak of listeria that has killed at least 11 people and hospitalized 37.