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Species/Subspecies: Klebsiella pneumoniae subsp. pneumoniae
Etymology: Genus name: named after the German bacteriologist Edwin Klebs (1834-1913). Species epithet: of pneumonia. Subspecies epithet: see Species epithet.
Significance:  [Very important]   
Type Strain: ATCC 13883 = CCUG 225 = NCTC 9633.
Macromorphology (smell):
Klebsiella pneumoniae Klebsiella pneumoniae Klebsiella pneumoniae 
Grey, round, shiny and mucoid colonies (2-3 mm in diameter), which can be confused with colonies of Enterobacter spp. Does not give hemolysis on blood agar.
Micromorphology: Nonmotile rods (0.3-1.0 x 0.6-6.0 µm), which appear singly, in pars or in short chains.
Gram +/Gram -:
Fig 69:4. Gram staining of Klebsiella pneumoniae subsp. pneumoniae, strain CCUG 225 at two different degrees of magnification (A and B). The lengths of the scale bars are equivalent to 5 µm in both images. Date: 2011-08-30.
Metabolism: Facultatively anaerobic
Other Enzymes: β-glucoronidase - (cf. E. coli spp.), DNase -, esculinase +, ornithine decarboxylase -, tryptophanase - (= indol -), urease +.
Biochemical Tests: Citrate +, hydrogen sulfide -, methyl red -, Voges-Proskauer +.
Fermentation of carbohydrates:
Lactose + (although weaker than for instance E. coli). Ferments glucose under gas production.
Spec. Char.:
Special Media:
Klebsiella pneumoniae Klebsiella pneumoniae Klebsiella pneumoniae 
Klebsiella pneumoniae 
SELMA- or SELMA Plus plates are used for milk samples and CLED agar for urine samples.
Hosts: Cattle, calves (foals), mares and dogs
Disease (Swedish):Nötkreatur: mastit. Kalv och föl: lunginflammation. Sto: endometrit. Hund: urinvägsinfektion.
Disease (English):Cattle: coliform mastitis. Calf and foal: pneumonia. Mares: endometritis. Dog: urinary tract infections.
Clinical Picture:
Virulence Factors: LPS, capsule.
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_009648 MGH 78578 5 315 120 1c + 5c) 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AF130981 ATCC13883T 1 436 



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Swedish University of Agricultural Sciences