Sensitivity of Citrobacter freundii and Citrobacter koseri to cephalosporins and penicillins

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Sensitivity of Citrobacter freundii and Citrobacter koseri to cephalosporins and penicillins.

An examination of 99 field and reference strains of Citrobacter freundii showed 79% of them to be resistant to cephaloridine and sensitive to carbenicillin, while 96% of 45 field and reference strains of Citrobacter koseri examined were sensitive to cephaloridine and resistant to carbenicillin. Susceptibility tests with these two antibiotics are therefore useful in separating the two species of...

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We report here the draft genome sequences of four blaKPC-containing bacteria identified as Klebsiella aerogenes, Citrobacter freundii, and Citrobacter koseri Additionally, we report the draft genome sequence of a K. aerogenes strain that did not contain a blaKPC gene but was isolated from the patient who had the blaKPC-2-containing K. aerogenes strain.

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Antigenic scheme of Citrobacter koseri.

An antigenic scheme, based on the determination of 17 somatic and 9 flagellar antigens, is proposed for Citrobacter koseri. Seven of the flagellar antigens constituted the specific phase (a through g), and the others (1 and 2) were nonspecific. Of the 238 theoretically possible serotypes, 48 were identified among 680 cultures examined.

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Genetic Characterization of Atypical Citrobacter freundii

The ability of a bacterial population to survive in different niches, as well as in stressful and rapidly changing environmental conditions, depends greatly on its genetic content. To survive such fluctuating conditions, bacteria have evolved different mechanisms to modulate phenotypic variations and related strategies to produce high levels of genetic diversity. Laboratories working in microbi...

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Novel variants of the qnrB gene, qnrB22 and qnrB23, in Citrobacter werkmanii and Citrobacter freundii.

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ژورنال

عنوان ژورنال: Journal of Clinical Pathology

سال: 1974

ISSN: 0021-9746

DOI: 10.1136/jcp.27.9.729