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An outbreak of listeria infections linked with frozen supplemental shakes has made at least 38 people ill in 21 states, with 37 hospitalizations and 11 deaths, the US Food and Drug Administration said Friday. The illnesses have been linked with some Sysco Imperial and Lyons ReadyCare products that were distributed to food service customers such as hospitals and long-term care facilities, the agency said. The outbreak includes cases dating to 2018 but remains ongoing, with 20 of the cases reported in 2024 and 2025, the US Centers for Disease Control and Prevention says.
The FDA says it is investigating the outbreak and has been told that certain frozen supplemental shakes are being recalled. Sysco did not respond to CNN’s request for comment. Listeria , a type of bacteria, is the third leading cause of death from foodborne illness in the US, killing about 260 people a year.
Symptoms may start days or weeks after consuming the bacteria and can include fever, muscle aches and fatigue. An infection can also cause a stiff neck, a headache, confusion or seizures. Those most at risk of severe outcomes are older adults, pregnant people and those with weakened immune systems.
Anyone who develops symptoms of listeria infection should get medical care right away. Most people won’t need treatment, but antibiotics may be needed in severe cases..
