The Better Health Guy (aka Scott Forsgren) recently published a well written article in the Townsend Letter on Bartonella spp infection (bartonellosis). The article is called Unraveling the Mystery of Bartonellosis. He included a list of the pathogenic species of Bartonella and a list of commonly reported symptoms from chronically ill patients who receive clinical diagnoses of Bartonella spp infection.
This article offers a good snapshot view of the clinical picture. More research is needed to better define the role that these bacteria play in complex chronic disease.