It mainly affects malnourished children with poor oral hygiene and concurrent debilitating systemic illnesses. It is a polymicrobial infection and borrelia vincentii and fusobacterium are the most important pathogens known. [ncbi.nlm.nih.gov]

In experimentally induced skin lesions in mice, Klebsiella strains of serotypes K1, K2, K4, and K5 were more virulent than were those expressing other capsule types ( 220 ). [doi.org]

Availability of iron increases host susceptibility to K pneumoniae infection. [emedicine.com]

Appelbaum, PC, Schick, SF, Kellogg, JA : Evaluation of the four-hour Micro-ID technique for direct identification of oxidase-negative, gram-negative rods from blood cultures. J Clin Microbiol 1980 ; 12 : 533 – 537. 20. [doi.org]