Differentiation of Klebsiella and Raoultella species obtained from human clinical specimens according to results of the present study and references 13, 23, and 32

Bacterial speciesaTest resultb
IndoleGrowth at 10°CHistamined-melezitoseOrnithine
K. pneumoniae/K. variicola
K. oxytoca +++/−
R. planticola +/−++
R. terrigena +++
R. ornithinolytica +++
  • a K. granulomatis and K. singaporensis are not included because isolates of these species cannot be cultured on conventional media (8) or are not obtained from human clinical specimens (25).

  • b −, negative reaction; +, positive reaction; +/−, either positive or negative reaction.