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

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.