Detection of Bartonella species, including Candidatus Bartonella ovis sp. nov, in ruminants from Mexico and lack of evidence of Bartonella DNA in saliva of common vampire bats (Desmodus rotundus) predating on them.

•A new Bartonella species was detected in sheep from Mexico: Candidatus Bartonella ovis. species commonly infecting ruminants were identified in Mexican cattle and sheep.•No Bartonella species isolated from common vampire bats (Desmodus rotundus) were detected in ruminants regularly bitten by common vampire bats.•Bartonella was not detected in saliva swab collected from Bartonella bacteremic and non-bacteremic vampire bats.