RT Journal Article SR Electronic T1 Culture-negative endocarditis: contribution of bartonella infections. JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 474 OP 476 DO 10.1136/hrt.77.5.474 VO 77 IS 5 A1 A. S. Breathnach A1 J. M. Hoare A1 S. J. Eykyn YR 1997 UL http://heart.bmj.com/content/77/5/474.abstract AB Two cases of bartonella endocarditis are described: one in a 55 year old homeless alcoholic man, caused by Bartonella quintana; the other in a 41 year old male with a history of exposure to cat fleas, caused by B henselae. Serological testing and polymerase chain reaction of the excised valves were used to identify the organisms. False positive serology for chlamydia was detected in one case.