The Food & Drug Administration (FDA) has identified a common lettuce grower connected to three ongoing but separate outbreaks of Escherichia coli O157:H7: an outbreak linked to romaine lettuce grown in Salinas, California, an outbreak tied to bagged Fresh Express salad mixes, and one linked to a restaurant chain in Washington state.

“The FDA, CDC [Centers for Disease Control and Prevention], and our state partners have identified a common grower between each of the outbreaks,” the FDA said.

“It’s still too early to conclusively determine whether other sources may have also been involved in the outbreaks. However, progress is being made, and the FDA is actively investigating other traceback leads identified to determine if we can triangulate a more precise location of the contamination.”

Credit: Agricultural Research Service (ARS)

Complex trace-back efforts

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