A genus of aerobic, Gram-negative, rod shaped bacterium assigned to the phylum Proteobacteria and the family Bartonellaceae.

A genus of gram-negative bacteria characteristically appearing in chains of several segmenting organisms. It occurs in man and arthropod vectors and is found only in the Andes region of South America. This genus is the etiologic agent of human bartonellosis. The genus Rochalimaea, once considered a separate genus, has recently been combined with the genus Bartonella as a result of high levels of relatedness in 16S rRNA sequence data and DNA hybridization data.

Any bacteria that is not assigned to the species level but can be assigned to the Bartonella genus level.

Genus of gram negative bacteria characteristically appearing in chains of several segmenting organisms; occurs in man and arthropod vectors; etiologic agent of human bartonellosis, bacillary angiomatosis, trench fever and cat scratch disease; the genus Rochalimaea, once considered a separate genus, has been combined with the genus Bartonella as a result of high levels of relatedness.