New Pub: Apparent expansion of virulent Vibrio parahaemolyticus in humans and sea otters
New Institute for Pandemic Insights study published in Virulence
A new publication provides evidence that particularly virulent strains of Vibrio parahaemolyticus, the leading cause of seafood-associated illness, are infecting both humans and sea otters along the coast of North American. Using genomic data collected over nearly two decades, researchers showed that although sea otters are exposed to a wide range of V. parahaemolyticus strains, disease in otters is most often linked to strains carrying high-risk virulence factors. These same strains are commonly found in human cases and are associated with similar clinical outcomes, including enteritis and septicemia, indicating shared mechanisms of disease across species. As sea otters live in near-shore coastal environments and share exposure pathways with humans, they may provide early warning of shifts in Vibrio virulence that affect public health. Read more about this study and our findings at the link below.
Sebastian PJ, Schlesener C, Byrne BA, Miller M, Smith W, Batac F, Burek-Huntington K, Goertz CEC, Rouse N, Hunter N, Weimer BC, Johnson CK. Apparent expansion of virulent Vibrio parahaemolyticus in humans and sea otters. Virulence. 2025 Dec 29;17(1):2603698. https://doi.org/10.1080/21505594.2025.2603698