May 23 (UPI) -- The U.S. Food and Drug Administration is warning that certain half-shell oysters that are frozen and raw harvested in South Korea may be potentially contaminated with norovirus.

The agency on Thursday advised restaurants and retailers to dispose of these products, and consumers experiencing symptoms should contact their healthcare provider or also the FDA.

On May 15, the California Department of Public Health notified the FDA of an outbreak of norovirus illnesses associated with the consumption of oysters in a lot from the Republic of Korea.

The FDA said oysters with Lot Code: B250130 were harvested on Jan. 30 and may have been distributed to restaurants and retailers in 10 states: Arizona, California, Colorado, Georgia, Idaho, Kansas, Nevada, Texas, Utah, Washington.

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