A Listeria outbreak tied to supplement shakes has sickened more than three-dozen people in 21 states, including Illinois.

Frozen shakes sold to nursing homes and other institutions are being recalled after a listeria outbreak in 21 states that has caused 11 deaths, according to the Federal Food and Drug Administration.

Frozen shakes sold to nursing homes and other institutions are being recalled after a listeria outbreak in 21 states that has caused 11 deaths, according to the Federal Food and Drug

Frozen shakes sold to nursing homes and other institutions are being recalled after a listeria outbreak in 21 states that has caused 11 deaths, according to the Federal Food and Drug Administration.

Frozen shakes sold to nursing homes and other institutions are being recalled after a listeria outbreak in 21 states that has caused 11 deaths, according to the Federal Food and Drug Administration.

The U.S. Food and Drug Administration (FDA) is working together with the Centers for Disease Control and Prevention (CDC) in collaboration with state and local partners to investigate illnesses in a multi-state outbreak of Listeria monocytogenes infections.

Here is what you need to know about the deadly listeria outbreak, including which products are being recalled.

A Listeria monocytogenes outbreak connected to frozen supplemental shakes distributed to foodservice and long-term care facilities has sickened at least 38 people across 21 states.

Recalled supplemental shakes were distributed to hospitals and long-term care facilities nationwide, federal officials say.

A Listeria outbreak linked to recalled frozen supplemental shakes has resulted in one death in North Carolina and at least 12 deaths nationwide.

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.