CDC, FDA report salmonella outbreak linked to frozen shrimp



The hatching of salmonella shrimp

As of June 25, 2021, six people infected with the epidemic strain of Salmonella Weltevreden have been reported in two states – Arizona and Nevada (see map). The diseases started on dates ranging from February 26, 2021 to April 25, 2021 (see calendar).

The sick are between 30 and 80 years old, with a median age of 56, and 66% are women. Out of five people for whom information is available, two were hospitalized. No deaths have been reported.

The actual number of sick people in an outbreak is likely much higher than the number reported, and the outbreak may not be limited to states with known illnesses. This is because many people recover without medical attention and are not tested for Salmonella. Additionally, recent illnesses may not yet be reported, as it typically takes 3 to 4 weeks to determine if a sick person is part of an outbreak.

State and local public health officials asked people about the food they ate in the week before their illness. Of the five people questioned, all said they ate shrimp before getting sick.

Laboratory and trace data

Public health investigators are using the PulseNet system to identify diseases that could be part of this outbreak. CDC PulseNet maintains a national database of genetic fingerprints of bacteria that cause foodborne illness. DNA fingerprinting is performed on bacteria using a method called whole genome sequencing (WGS).

This outbreak was first detected by the FDA when a sample of Avanti Frozen Foods shrimp collected for import testing was found to be contaminated with Salmonella Weltevreden. Using the PulseNet system, investigators identified several people as part of this outbreak by WGS. WGS has shown that the Salmonella of shrimp are closely linked to bacteria from sick people.

The FDA conducted a traceback investigation using purchase records from places where four sick people purchased shrimp. Based on their places and dates of purchase, the FDA identified a current shipment of frozen cooked shrimp; a supplier for this shipment was Avanti Frozen Foods.

The WGS of bacteria from samples from four people predicted no antibiotic resistance. The CDC’s National Antimicrobial Resistance Surveillance System (NARMS) laboratory currently performs susceptibility testing to standard antibiotics.

Public health actions

In March 2021, the shipment of Avanti Frozen Foods shrimp contaminated with Salmonella on import was destroyed. Avanti Frozen Foods has been added to Import Alert 16-81external icon, which allows the FDA to withhold products from importation without physical examination due to the presence of Salmonella.

On June 25, 2021, Avanti Frozen Foods recalledexternal icon additional batches of frozen cooked shrimp as they may be contaminated with Salmonella.

The CDC is advising people not to eat, sell or serve the recalled frozen cooked shrimp supplied by Avanti Frozen Foods.

Salmonella: Marler Clark, The Food Safety Law Firm, is the nation’s leading law firm representing victims of Salmonella outbreaks. Marler Clark’s Salmonella lawyers have represented thousands of victims of Salmonella and other foodborne illness outbreaks and have recovered more than $ 800 million for their clients. Marler Clark is the only law firm in the country whose practice focuses exclusively on litigation related to foodborne illness. Our Salmonella lawyers have litigated cases of Salmonella resulting from outbreaks related to a variety of foods, such as cantaloupe, tomatoes, ground turkey, salami, sprouts, grains, peanut butter and foods served in restaurants. The law firm has filed Salmonella lawsuits against companies such as Cargill, ConAgra, Peanut Corporation of America, Sheetz, Taco Bell, Subway and Wal-Mart.

If you or a member of your family fell ill with a Salmonella infection, including reactive arthritis or irritable bowel syndrome (IBS), after consuming food and you want to take legal action, contact the attorneys of Marler Clark Salmonella for a free case assessment.


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