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Carl Friedlander described Klebsiella bacillus which is why it was termed Friedlander bacillus for many years. The species of Klebsiella are all gram-negative and usually non-motile. They tend to be shorter and thicker when compared to others in the family Enterobacteriaceae. Klebsiella species are found everywhere in nature. This is thought to ...
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.
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.
Most Serratia species are nonpathogenic, but those that are pathogenic typically cause infection in immunocompromised individuals. [33] S. marcescens is the main pathogenic species, infecting animals and plants, but other species that have been reported to infect individuals include Serratia plymuthica, Serratia liquefaciens, Serratia rubidaea ...
Medically relevant gram-negative bacilli include a multitude of species. Some of them cause primarily respiratory problems (Klebsiella pneumoniae, Legionella pneumophila, Pseudomonas aeruginosa), primarily urinary problems (Escherichia coli, Proteus mirabilis, Enterobacter cloacae, Serratia marcescens), and primarily gastrointestinal problems ...
A 2008 study at Mount Sinai identified outcomes associated with Carbapenem-resistant Klebsiella pneumoniae infections, in which patients in need of organ or stem cell transplants, mechanical ventilation, prolonged hospitalization, or prior treatment with carbapenems, had an increased probability of infection with Carbapenem-resistant K ...
More recently, many countries have experienced a dramatic upswing in the prevalence of Enterobacteriaceae that produce both ESBLs and carbapenemases such as the Klebsiella pneumoniae carbapenemase (KPC). As of 2013, 70% of Greek Klebsiella pneumoniae isolates are resistant to third generation cephalosporins and 60% are resistant to carbapenems ...
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]