The taxonomy modification of Propionibacterium sp. with the description of new species, especially Cutibacterium namnetense, raises the question of species distribution in routine clinical samples. We performed a retrospective study during 3 years before the implementation of MALDI-TOF. Two hundred sixty-nine isolates were included in the study. MALDI-TOF identification, 16S rRNA, and new developed gyrB partial sequencings were performed. The most representative species was C. acnes in 88% of the cases, regardless of the origin of the clinical sample. Eventually, we identified three C. namnetense strains, representing a 1.1% prevalence over the period of time, including two bone infections. MALDI-TOF databases should be regularly updated to incorporate new species. gyrB sequencing constitutes a both easy and relevant method to identify Cutibacterium sp. especially C. namnetense, a new player in bone infections.

丙酸杆菌属的分类学修饰。通过描述新物种，尤其是南分枝杆菌，提出了常规临床样品中物种分布的问题。在实施MALDI-TOF之前的3年中，我们进行了一项回顾性研究。该研究包括269个分离株。进行MALDI-TOF鉴定，16S rRNA和新开发的gyrB部分测序。不管临床样品的来源如何，最有代表性的物种是88％的痤疮丙酸杆菌。最终，我们确定了三个C. namnetense毒株，在一段时间内占1.1％的患病率，其中包括两次骨感染。MALDI-TOF数据库应定期更新以纳入新物种。gyrB测序构成了一种鉴定皮肤杆菌的简便而相关的方法。特别是C. namnetense，这是骨骼感染的新参与者。