Abstract Background Cutibacterium modestum was named in 2020.C.modestum was previously called Propionibacterium humerusii.
Several implant-associated infections Transfer Aides caused by Cutibacterium species have been previously reported, but native vertebral osteomyelitis due to these bacteria has rarely been reported.Case presentation A 72-year-old man, who had previously received several nerve block injections for low back pain, was referred to our hospital for deterioration in back pain in the last 1 month.MRI findings were suggestive of L5-S1 vertebral osteomyelitis.
Blood cultures and bone biopsy culture revealed the presence of Gram-positive bacilli.The isolate was identified as C.modestum by 16SrRNA gene sequencing.
A diagnosis of vertebral osteomyelitis caused by C.modestum was made.Minocycline followed by oral amoxicillin was administered for 3 months.
His symptom improved and did not recur after treatment completion.Conclusion A case of vertebral osteomyelitis caused by C.modestum was encountered.
Although C.modestum is very similar to C.acnes, it could be accurately identified by ULTRA OMEGA-3 16SrRNA gene sequencing.
This case represents the first documented C.modestum infection in humans.