Patients who are colonized with VRE can also be co-colonized with other antibiotic-resistant bacteria such as ESBL-producing bacteria. Our study is the first to measure co-colonization rates of VRE and ESBL-producing bacteria. Isolating VRE-colonized patients would isolate 47% of the ESBL-colonized patients without the need for further testing. Hence, active surveillance for VRE should also theoretically diminish the amount of patient-to-patient transmission of ESBL-producing bacteria.
Ae.ro.mo' nas . Gr. n. aer air, gas; Gr. n. monas unit, monad; M.L. fem. n. Aeromonas gas(‐producing) monad. Proteobacteria / Gammaproteobacteria / Aeromonadales / Aeromonadaceae / Aeromonas Cells straight, coccobacillary to bacillary with rounded ends, 0.3–1.0 × 1.0–3.5 µm. Occur singly, in pairs, or rarely in short chains. Gram negative. Most species are motile by a single, polar flagellum of 1.7 µm wavelength; peritrichous flagella may be formed on solid media in young cultures and lateral flagella occur in some species. Facultatively anaerobic. Chemoorganotrophic, displaying oxidative and fermentative metabolism of D ‐glucose. Acid and often acid with gas produced from many carbohydrates, especially D ‐glucose. Nitrate is reduced to nitrite. A variety of exoenzymes such as arylamidases, amylase, DNase, esterases, peptidases, and other hydrolytic enzymes are produced. Main cellular fatty acids are hexadecanoic acid (C 16:0 ), hexadecenoic acid (C 16:1 ), and octadecenoic acid (C 18:1 ). Usually oxidase positive and catalase positive . Optimum growth temperature varies between 22°C and 37°C; growth temperature can range from 0 to 45°C, and some species do not grow at 35°C. Generally resistant to 150 μg of the vibriostatic agent 2,4 diamino‐6, 7‐diisopropylpteridine (0/129) . Occur in fresh, brackish, tap, well, and chlorinated water, as well as biosolids and sewage. Some of the species have been associated with disease in a wide variety of warm‐blooded and cold‐blooded animals, including humans, domestic animals, frogs, fresh and salt water fish, and invertebrates. The phylogenetic position of Aeromonas , as determined by 16S rRNA gene sequence analysis, is in the Gammaproteobacteria , with its closest relatives in the families Vibrionaceae and Enterobacteriaceae . 16S rDNA sequences (signature sequences) have been determined for nearly all validly named species and are deposited in GenBank, EMBL, or RDP databases (Table BXII.γ180). The mol % G + C of the DNA is : 57–63. Type species : Aeromonas hydrophila (Chester 1901) Stanier 1943, 213 ( Bacillus hydrophilus Chester 1901 , 235.)
Ae.ro.mo.na.da' les . M.L. fem. n. Aeromonas type genus of the family and order; suff. ‐ ales to denote an order; M.L. pl. n. Aeromonadales the Aeromonas order. Proteobacteria / Gammaproteobacteria / Aeromonadales
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