CDC Raises Salmonella Outbreak Linked to Raw Virginia Oysters to 28 Cases, Now in 13 States

The U.S. Centers for Disease Control and Prevention (CDC) published an update on October 30, 2026 on the Salmonella outbreak associated with raw oysters. The count rises to 28 ill people in 13 states, with one new case and one new state compared with the previous report, while hospitalizations remain at 5 and no deaths have been reported. The investigation remains open, so more cases may be added.

The outbreak is linked to whole, in-shell oysters harvested between September 18 and October 8, 2026 from the Little Wicomico River and Lower Little Wicomico harvest areas in Virginia. On October 9 those oysters were recalled and, the same day, the Virginia Department of Health closed the river to oyster and clam harvesting until November 7. The CDC advises not to eat, serve or sell the recalled oysters.

Oysters filter large volumes of water and concentrate the bacteria present in it, such as Salmonella from human or animal fecal contamination that reaches estuaries with rainfall or discharges. Because they are eaten raw, no cooking step eliminates the pathogen before it reaches the consumer. Salmonella infection usually causes diarrhea, fever and stomach cramps between 6 hours and 6 days after consumption, and can be severe in young children, older adults and immunocompromised people.

For the bivalve shellfish chain, the case underlines the value of monitoring the microbiological quality of water in harvest areas and of verifying product lot by lot before distribution. TAAG's Specio 1.1 kit detects Salmonella spp. by real-time PCR in food, beverages and surfaces, and can support that internal control. The association is indirect: oysters are not among the industries listed on the kit's datasheet, the news describes an official investigation, and presumptive results must be confirmed with the reference method.