A newly recognized fastidious gram-negative pathogen as a cause of fever and bacteremia.

Order of authorship in the original publication: Slater, Welch, Hensel.... Hensel, a medical technologist working in the clinical microbiology laboratory, University Hospitals, Oklahoma City, used innovative culture methods to discover a previously unknown gram negative bacillus in blood cultures of two HIV patients with persistent fever and bacteremia. They stated that the organism most closely resembled "Rochalimaea quintana" (now named Bartonella quintana).

(Thanks to Juan Weiss for this reference and its interpretation.)