By sequencing a total of 2089 bp of the 16S rRNA and phoE genes it was demo
nstrated that Calymmatobacterium granulomatis (the causative organism of do
novanosis) shows a high level of identity with Klebsiella species pathogeni
c to humans (Klebsiella pneumoniae. Klebsiella rhinoscleromatis). It is pro
posed that C. granulomatis should be reclassified as Klebsiella granulomati
s comb. nov. An emended description of the genus Klebsiella is given.