At least 15 of the 30 Bartonella species are involved in human pathologies, and several of them are associated with rodents and their fleas. The aims of this study were detect and molecularly characterize the Bartonella infections in rodents from an urban protected area of ​​Buenos Aires City (Argentina). A total of 186 rodents were captured and identified. For PCR of the 16S rRNA fragment, 23.7% of the samples tested positive, and two groups (GrA and GrB) were identified. Likewise, the comparison between the sequences obtained for the gltA gene determined the presence of three genotypes, closely related to Bartonella spp. detected in sigmodontine rodents and their fleas in the Americas, which form a well-separated clade. The high prevalence of Bartonella in rodents from an urban protected area of ​Buenos Aires city is relevant from a public health perspective.

30种巴尔通体物种中至少有15种与人类病理有关，其中一些与啮齿动物及其跳蚤有关。这项研究的目的是检测和分子鉴定来自布宜诺斯艾利斯市（阿根廷）城市保护区的啮齿动物中的巴尔通体感染。总共捕获并鉴定了186只啮齿动物。对于16S rRNA片段的PCR，检测到23.7％的样品呈阳性，并鉴定出两组（GrA和GrB）。同样，对gltA基因获得的序列之间的比较确定了与Bartonella密切相关的三种基因型的存在。spp。在美洲的sigmodontine啮齿动物及其跳蚤中检出，形成分离良好的分支。从公共卫生角度看，来自布宜诺斯艾利斯市城市保护区的啮齿动物中巴尔通体的高流行是重要的。