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Klebsiella species are known to also infect a variety of other animals, both as normal flora and opportunistic pathogens. [ 4 ] Klebsiella organisms can lead to a wide range of disease states, notably pneumonia , urinary tract infections , sepsis , meningitis , diarrhea , peritonitis and soft tissue infections.
The genus Klebsiella was named after the German microbiologist Edwin Klebs (1834–1913). [citation needed] It is also known as Friedlander's bacillum in honor of Carl Friedländer, a German pathologist, who proposed that this bacterium was the etiological factor for the pneumonia seen especially in immunocompromised individuals such as people with chronic diseases or alcoholics.
Klebsiella aerogenes, [2] previously known as Enterobacter aerogenes, is a Gram-negative, oxidase-negative, catalase-positive, citrate-positive, indole-negative, rod-shaped bacterium. [3] Capable of motility via peritrichous flagella, [ 4 ] it is approximately one to three microns in length.
Klebsiella michiganensis is a species of bacteria in the genus Klebsiella and is one of the nine species in the Klebsiella oxytoca complex. [1] It is closely related to the species K. oxytoca except K. michiganensis is negative in the pectin degradation test and negative by PCR for polygalacturonase gene pehX. [1]
Klebsiella oxytoca is an exception, and a proposal to classify K. oxytoca in a separate, unnamed genus has been made. [5] It consists of species Raoultella electrica, Raoultella ornithinolytica, Raoultella planticola and Raoultella terrigena. [6] In human infections, Raoultella species are generally sensitive to treatment with carbapenems. In ...
Klebsiella oxytoca is a Gram-negative, rod-shaped bacterium that is closely related to K. pneumoniae, from which it is distinguished by being indole-positive; it also has slightly different growth characteristics in that it is able to grow on melezitose, but not 3-hydroxybutyrate.
On carbohydrate-rich media, Klebsiella colonies appear greyish-white in colour with a mucosal outer surface. [6] The media used for selecting for Klebsiella species in a mixed sample is an agar including ornithine, raffinose, and Koser citrate, where members of this genus will form yellow, wet-looking colonies. [8]
Klebsiella huaxiensis is a pathogenic gram-negative bacterium in the family Enterobacteriaceae. [1] [2] It is gas-producing, non-motile, and does not form spores.[3]The bacterium has the ability to grow on trypticase soy agar, Mueller–Hinton agar, lysogeny broth agar, and brain heart infusion agar. 24 hours of incubation at 37 °C is required for colonies to grow on BHI agar.