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.

Frozen supplemental shakes have been linked to a nationwide Listeria outbreak that have led to 38 illnesses and 12 deaths.

A deadly listeria outbreak linked to frozen supplement shakes has spread across 21 states, leaving 12 dead and 38 hospitalized, prompting an FDA investigation and nationwide recall.

Prairie Farms Dairy has ceased production of nutritional shakes linked to a listeria outbreak that has claimed the lives of 11 people.

A listeria outbreak linked to frozen nutritional milkshakes is to blame for 12 deaths and dozens of hospitalizations, the U.S. Food and Drug Administration confirmed Monday following an investigation that spanned years.

A listeria outbreak linked to frozen shakes has killed 12 and sickened 38 people in the US across 21 states. According to the Centers for Disease Control and Prevention, the shakes were distributed to hospitals and care facilities,

Supplemental shakes have been linked to a deadly listeria outbreak. They were distributed in hospitals and long-term care facilities.

“Listeria is especially harmful to pregnant women, people 65 or older, and people with weakened immune systems,” the CDC wrote on its website. “This is because Listeria is more likely to spread beyond their gut to other parts of their body, resulting in a severe condition known as invasive listeriosis.”

In the outbreak, 38 people were infected across 21 states, including Pennsylvania, the FDA said. Most of them lived in long-term care facilities or were hospitalized prior to getting sick.

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.