The FDA is investigating a subset of a larger outbreak investigation being conducted by the Centers for Disease Control and Prevention. Between the harvesting dates of February 12, 2019 and April 9, 2019, five ill patients reported eating raw oysters shortly before becoming ill with Shigella flexneri. One of the five patients was hospitalized; there have been no deaths. The last illness onset was April 17, 2019. Laboratory analyses were used to confirm that reported clinical illnesses matched pathogens found in product samples and traceback information indicated the implicated shellfish were harvested from Estero El Cardon, in Baja California Sur, Mexico.
The FDA confirmed that oysters harvested in Estero El Cardon, Baja California Sur, Mexico, were distributed to California, Nevada, New York, and Arizona with illnesses reported in California, Nevada and New Hampshire. The New Hampshire case reported eating at a restaurant in California shortly before becoming ill. It is possible that additional states received these potentially contaminated oysters either directly from Mexico or through further distribution within the U.S.
On May 7, 2019, the Mexican Shellfish Sanitation Program authorities voluntarily closed the growing area of Estero El Cardon and halted oyster harvesting in response to the reported illnesses. The shelf-life of fresh, raw oysters is limited. All raw oysters from this growing area are no longer expected to be available to consumers. For more information please see www.issc.org/noticesExternal Link Disclaimer.
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