Diarrhea-Gate: One Sinaloa Farm, 345 Sick, And Two Restaurant Chains Down Double Digits

The FDA has finished tracing a multistate outbreak of Salmonella Javiana back to its source - a single grower in Sinaloa, Mexico, which entered the U.S. through Coast Citrus Distributors, a California importer that supplies restaurant customers.

In this file photo, a shopper checks the firmness of a fresh jalapeño pepper at a produce stand in Jackson, Miss., on Wednesday, July 15, 2015. (AP Photo/Rogelio V. Solis)

The agency asked Coast Citrus to recall the product. The company says has done so, and is no longer buying from the grower.

The CDC has counted 345 confirmed infections in 27 states, including 36 hospitalizations and no deaths. Illnesses began between June 19 and July 20. The real number is likely higher: most people who get salmonella recover at home and are never tested.

The epidemiology was unusually clear. Whole-genome sequencing suggested the cases were coming from the same source, and restaurant histories pointed investigators in the same direction. Of 191 people interviewed, 177 - 93 percent - said they had eaten at a Mexican-style restaurant in the month ending July 14.

The restaurant chains, for their part, moved before the investigation became a national story. Chipotle changed jalapeño suppliers at affected restaurants on July 20. The company says its traceability system allowed it to identify the grower and lot invol