Important features of HACEK endocarditis compared with all other causes of infective endocarditis in database^*.

*Values are reported as n/n (%), unless otherwise noted. †Aortic valve- homograft 1, unknown repair 1; mitral valve – repair with prosthesis 1, other 2. TEE = Transesophageal ECHO. ‡Specimens that were culture-positive were heart valve (20), joint fluid (2), pacemaker wire (1), urine (1) and other (5) §Myocardial wall 2, chordae 1, intracardiac device 1. **1 year mortality data was available on 57(74%) of HE and 4208(76%) of non-HE subjects.