MIAMI, Florida – The U.S. Food and Drug Administration (FDA) has issued an urgent advisory cautioning the public against consuming, selling, or serving specific lots of frozen raw shrimp imported from an Indonesian company, citing concerns over possible contamination with Cesium-137 (Cs-137), a radioactive isotope. The affected products are sold under Walmart's Great Value brand and include raw frozen shrimp with the following lot codes and best-by dates: Product Description Lot Code Best By Date Great Value Frozen Raw Shrimp 8005540-1 3/15/2027 Great Value Frozen Raw Shrimp 8005538-1 3/15/2027 Great Value Frozen Raw Shrimp 8005539-1 3/15/2027 These shrimp were processed by PT. Bahari Makmur Sejati (doing business as BMS Foods), an Indonesian firm, and distributed to Walmart stores in the following 13 states: Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Missouri, Mississippi, Ohio, Oklahoma, Pennsylvania, Texas, and West Virginia. The FDA's investigation began after U.S. Customs and Border Protection (CBP) detected Cs-137 in shipping containers at four U.S. ports: Los Angeles, Houston, Savannah, and Miami. Subsequent testing confirmed the presence of Cs-137 in one sample of breaded shrimp from a detained shipment, at a level of approximately 68 Bq/kg. While this level is below the FDA's Derived Intervention Level of 1200 Bq/kg and does not pose an immediate health risk, the agency emphasized that repeated exposure to low-level radiation over time could potentially lead to health issues. Importantly, no shrimp that tested positive for Cs-137 has entered the U.S. food supply, according to the FDA. However, the advisory stems from evidence that the products may have been prepared, packed, or held under insanitary conditions, violating the Federal Food, Drug, and Cosmetic Act, which could result in contamination. Walmart has received shipments of the implicated shrimp from lots imported after the initial detection but that did not trigger alerts for Cs-137, prompting the FDA to recommend a recall. Consumers who have purchased the affected Great Value frozen raw shrimp are urged to discard the products immediately and not to consume or serve them. Restaurants, distributors, and retailers should likewise dispose of any stock and refrain from selling or serving it. Individuals concerned about potential exposure to elevated levels of cesium are advised to consult their healthcare provider. In response, the FDA has placed PT. Bahari Makmur Sejati on a new import alert for chemical contamination, halting further imports until the issues are resolved. The agency is collaborating with CBP to block contaminated shipments and is working with Indonesian regulatory authorities to identify the contamination's root cause. The investigation remains ongoing, with updates promised as new information emerges. This advisory highlights ongoing concerns about imported seafood safety, including recent FDA actions against other Indonesian shrimp exporters for issues like veterinary drug residues and economic adulteration. Consumers are encouraged to check product labels and stay informed through FDA updates.