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Pseudomonas aeruginosa 

Pseudomonas aeruginosa
Pseudomonas aeruginosa

G.C.K.W. Koh

, and Sharon J. Peacock

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date: 02 March 2021

Pseudomonas aeruginosa is a highly versatile environmental Gram-negative bacterium that can be isolated from a wide range of habitats, including soil, marshes, and the ocean, as well as from plant and animal tissues. It is resistant to many disinfectants and antibiotics, giving it a selective advantage in hospitals. It rarely causes infection in the healthy host but is a major opportunistic pathogen. Diagnosis is usually straightforward when the organism is cultured from samples collected from normally sterile sites, but is often challenging when infection is suspected in non-sterile sites such as a catheterized urinary tract, burns, or skin ulcers, because P. aeruginosa may be either a pathogen or an innocent bystander. Treatment can be challenging as P. aeruginosa is intrinsically resistant to a broad range of antimicrobials.

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