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Citrobacter koseri, formerly known as Citrobacter diversus, is a Gram-negative non-spore forming, rod-shaped bacterium. It is a facultative anaerobe capable of aerobic respiration. It is motile via peritrichous flagella. [2] It is a member of the family of Enterobacteriaceae.
The species C. amalonaticus, C. koseri, and C. freundii can use citrate as a sole carbon source. Citrobacter species are differentiated by their ability to convert tryptophan to indole (C. koseri is the only citrobacter to be commonly indole-positive), ferment lactose (C. koseri is a lactose fermentor), and use malonate.
Klebsiella oxytoca on agar plate. 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.
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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.
The onset of TD usually occurs within the first week of travel, but may occur at any time while traveling, and even after returning home, depending on the incubation period of the infectious agent. [11] Bacterial TD typically begins abruptly, but Cryptosporidium may incubate for seven days, and Giardia for 14 days or more, before symptoms ...
Year City Venue Source Cases Deaths Fatality rate Notes 1965: Washington, D.C., United States St. Elizabeths Hospital: Unknown: 94: 16: 17%: The outbreak occurred in 1965, but was not identified as legionnaires' disease until saved blood serum was exposed to bacterial samples from the 1976 Philadelphia Legionnaires' disease outbreak.
Klebsiella granulomatis is a Gram-negative, rod-shaped bacterium of the genus Klebsiella [1] known to cause the sexually transmitted infection granuloma inguinale (or donovanosis).