Klebsiella sp.

Image Source: Microbitos

Pathogenesis and Infectious Disease:

• K. pneumoniae is a significant cause of respiratory (especially pneumonia) and urinary tract diseases (opportunist)
  
• K. ozaenae and K. rhinoscleromatis are associated with chronic inflammatory diseases of the upper respiratory tract
• K. granulomatis is the causative agent of granuloma inguinale

Test Results:

• Lactose Fermentation (MAC) – positive (pink colonies)
• HE – yellow colonies
• XLD – yellow colonies
• H2S production : negative
• IMViC :   -/-/+/+
• Urea : can hydrolyze slowly
• TSI : A/A
• Motility : negative
• ONPG : negative
• Note: K. oxytoca – IMViC :  +/-/+/+