Half-shell Oysters from Republic of Korea Potentially Contaminated with Norovirus

August 20, 2025

The FDA is aware that there are additional frozen, raw, half-shell and individual quick frozen (IQF) oysters processed by JBR KR-15-SP, Tongyeong-si, Republic of Korea (ROK) that consumers, restaurants, and retailers should avoid eating, serving, and selling due to potential contamination with norovirus.

The product of concern includes all half-shell and IQF oyster products harvested between February 7, 2025, and August 7, 2025, and processed by JBR, KR-15-SP. With these additional harvest dates, the product of concern is all half-shell and IQF oyster products harvested between December 30, 2024, and August 7, 2025, and processed by JBR, KR-15-SP.

Shellfish, such as oysters, contaminated with norovirus can cause illness if eaten, and potentially severe illness in people with compromised immune systems. Food containing norovirus may look, smell, and taste normal. Consumers of these products who are experiencing symptoms of illness should contact their healthcare provider and report their symptoms to their local Health Department. Diarrhea, abdominal cramps, nausea, vomiting, and fever may be associated with gastroenteritis infections caused by this organism.

This advisory will be updated when additional information is available.

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