Listeria outbreak that hospitalized 10 linked to California company's ready-to-eat products

A likely source of contamination has been identified in an ongoing Listeria outbreak affecting California and Nevada.

three prepackaged sandwiches
Several products, including sandwiches, have been recalled in relation to the outbreak. (This is a stock photo, not an image of the affected products.)
(Image credit: rusak via Getty Images)

An outbreak of 10 serious Listeria infections that led to hospitalization has been linked to several ready-to-eat products, including snack boxes and sandwiches.

So far, officials have identified eight illnesses linked to the outbreak in California and an additional two cases in Nevada, the Food and Drug Administration (FDA) announced Saturday (May 10). The earliest of these cases dates to December 2023, while the rest occurred in 2024. No cases are known to have taken place this year.

Nicoletta Lanese
Channel Editor, Health

Nicoletta Lanese is the health channel editor at Live Science and was previously a news editor and staff writer at the site. She is a recipient of the 2026 AHCJ International Health Study Fellowship, with a project focused on antibiotic stewardship practices in Japan and the U.S. They hold a graduate certificate in science communication from UC Santa Cruz and degrees in neuroscience and dance from the University of Florida. Beyond Live Science, Lanese's work has appeared in The Scientist, Science News, the Mercury News, Mongabay and Stanford Medicine Magazine, among other outlets. Based in NYC, she also remains involved in dance and performs in local choreographers' work.

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