February 2024 Volume 15 Issue 2 | Theodore C. White, Brooke D. Esquivel, Elisa M. Rouse Salcido, Allison M. Schweiker, Amanda R. dos Santos, Lalitha Gade, Erin Petro, Butch KuKanich, Kate S. KuKanich
The study reports the first detection of *Candida auris* in a dog's oral cavity in Kansas, marking the first identification of this emerging fungal pathogen in a non-human mammal in the United States. The isolate was found in the mouth of a 2-year-old female Retriever mix (Dog A) during a study of the oral mycobiome in a shelter. The *C. auris* isolate was identified as a member of Clade IV, which has been detected in human infections in Chicago and Florida, but is less prevalent in the U.S. compared to Clades I and III. The isolate was resistant to fluconazole, terbinafine, and amphotericin B but susceptible to caspofungin, aligning with the drug resistance patterns observed in human isolates. The source of the transient colonization in Dog A is unknown, and there is no evidence of further transmission to humans, other dogs, or pets in its adopted household. This finding highlights the potential for zoonotic transmission and the development of antifungal resistance, emphasizing the need for vigilance in both veterinary and human healthcare settings.The study reports the first detection of *Candida auris* in a dog's oral cavity in Kansas, marking the first identification of this emerging fungal pathogen in a non-human mammal in the United States. The isolate was found in the mouth of a 2-year-old female Retriever mix (Dog A) during a study of the oral mycobiome in a shelter. The *C. auris* isolate was identified as a member of Clade IV, which has been detected in human infections in Chicago and Florida, but is less prevalent in the U.S. compared to Clades I and III. The isolate was resistant to fluconazole, terbinafine, and amphotericin B but susceptible to caspofungin, aligning with the drug resistance patterns observed in human isolates. The source of the transient colonization in Dog A is unknown, and there is no evidence of further transmission to humans, other dogs, or pets in its adopted household. This finding highlights the potential for zoonotic transmission and the development of antifungal resistance, emphasizing the need for vigilance in both veterinary and human healthcare settings.