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The oxidase test is used to determine whether an organism possesses the cytochrome c oxidase enzyme. The test is used as an aid for the differentiation of Neisseria , Moraxella , Campylobacter and Pasteurella species (oxidase positive).
While infection can occur by the fecal-oral route, ingestion of bacteria in raw or undercooked seafood, usually oysters, is the predominant cause of the acute gastroenteritis caused by V. parahaemolyticus. [3] Wound infections also occur, but are less common than seafood-borne disease.
Vibrio spp. are facultative anaerobes that test positive for oxidase and do not form spores. [4] [5] All members of the genus are motile. They are able to have polar or lateral flagellum with or without sheaths. [4] [6] Vibrio species typically possess two chromosomes, which is unusual for bacteria.
The typhidot test becomes positive within 2–3 days of infection. [citation needed] Two colored bands indicate a positive test. A single control band indicates a negative test. A single first fixed line or no band at all indicates an invalid test. Typhidot's biggest limitation is that it is not quantitative, just positive or negative. [33]
Campylobacter upsaliensis is a catalase negative species that can be further differentiated from other Campylobacter species by its inability to produce hydrogen sulfide on triple sugar iron as well as a positive oxidase test. [2] Additionally it cannot hydrolyze hippurate like other species and is considered sensitive to nalidixic acid. [4]
Alcaligenes faecalis is a species of Gram-negative, rod-shaped bacteria commonly found in the environment.It was originally named for its first discovery in feces, but was later found to be common in soil, water, and environments in association with humans.
Biochemical differentiation tests with positive results are: catalase, urease and oxidase tests. Actinobacillus equuli subspecies equuli is not hemolytic and is found in equine and porcine hosts. Another subspecies exists and is classified as Actinobacillus equuli subsp. haemolyticus which is positive for hemolysis and is found in horses and ...
Pseudomonas stutzeri is a Gram-negative soil bacterium that is motile, has a single polar flagellum, and is classified as bacillus, or rod-shaped. [1] [2] While this bacterium was first isolated from human spinal fluid, [3] it has since been found in many different environments due to its various characteristics and metabolic capabilities. [4]