• Koh Shinohara, Yasuhiro Tsuchido, Michio Suzuki, Kojiro Yamamoto, Yasutaro Okuzawa, Koichi Imaoka, and Tsunehiro Shimizu.
• Department of Infectious Diseases, Kyoto City Hospital, Japan.
• Intern. Med. 2022 Jul 15; 61 (14): 223322372233-2237.

AbstractCapnocytophaga species are among the typical zoonotic pathogens causing infections following direct contact with animals. Recently, a putative novel species of zoonotic Capnocytophaga, Capnocytophaga stomatis, was reported. We herein report the first case of bacteremia caused by C. stomatis. A woman in her 80s with multiple myeloma who was receiving bortezomib and dexamethasone therapy was admitted to our hospital with a 2-day history of a fever and right calf redness. She was often licked by her cat. On a blood culture, thin, Gram-negative rods were detected, which were identified as C. stomatis by whole-genome sequencing. The patient was successfully treated with ampicillin-sulbactam treatment. Our case highlights the pathogenic potential of the putative novel Capnocytophaga, C. stomatis, in immunocompromised hosts.

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