New insights into the pathogenesis and transmission of : systemic infection in two bottlenose dolphins ().

spp. are zoonotic pathogens that can affect both terrestrial and marine mammals. has been identified in various cetacean species, but only one sequence type (ST27) has been reported in humans. However, it is important to conduct surveillance studies to better understand the impact of marine species on marine mammals, a typically understudied host group. Here, we describe a systemic infection by two related strains of (ST25) in a couple of live-stranded bottlenose dolphins, with more severe lesions in the younger animal. Furthermore, was first detected in milk from a female cetacean that stranded with its offspring. Our study reveals novel insights into the epidemiology and pathological consequences of infections in cetaceans, emphasizing the crucial importance of ongoing surveillance and accurate diagnosis to understand the impact of this pathogen on marine mammal populations.