CDC, FDA, and public health officials in several states are investigating a multistate outbreak of Listeria infections linked to supplement shakes. Many people in this outbreak lived in long-term care facilities or were hospitalized before becoming sick. Epidemiologic, laboratory, and traceback data show that supplement shakes manufactured by Prairie Farms are contaminated with Listeria and are making people sick. As of February 21, 2025, 38 people were reported to have been infected with the outbreak strain of Listeria monocytogenes in 21 states. Of 38 people with information available, 37 have been hospitalized. Twelve deaths have been reported from California, Illinois, Indiana, Michigan, Minnesota, North Carolina, New York, Tennessee, Texas, and Washington. Most people in this outbreak reported living in long-term care facilities or were hospitalized prior to becoming sick. CDC investigated this outbreak in 2018, 2021, and 2023. Epidemiologic evidence in previous investigations identified that sick people were residents in long-term care facilities and nursing homes, and the likely source was food served in those types of institutions, but there was not enough information to identify a specific food. CDC reopened the investigation in October 2024 after six new illnesses were reported. In February 2025, after traceback identified a product of interest, the outbreak strain was found in environmental samples from Prairie Farms. WGS showed that bacteria from sick people's samples are closely related genetically. Suggesting that people in this outbreak got sick from the same food. On February 4, 2025, the FDA collected environmental samples at Prairie Farms for testing. On February 19, 2025, WGS showed that Listeria in the environment is closely related to bacteria from sick people. On February 22, 2025, Lyons Magnus LLC recalled supplement shakes. CDC is advising people not to eat, sell, or serve recalled products. @ https://www.cdc.gov/listeria/outbreaks/shakes-022025/investigation.html
