Salmonella enterica serotype typhi with nonclassical quinolone resistance phenotype

We report Salmonella enterica serotype Typhi strains with a nonclassical quinolone resistance phenotype (i.e., decreased susceptibility to ciprofloxacin but with susceptibility to nalidixic acid) associated with a nonsynonymous mutation at codon 464 of the gyrB gene. These strains, not detected by the nalidixic acid disk screening test, can result in fluoroquinolone treatment failure.

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Bibliographic Details
Main Authors: Accou-Demartin, Marie, Gaborieau, Valérie, Song, Yajun, Roumagnac, Philippe, Marchou, Bruno, Achtman, Mark, Weill, François-Xavier
Format: article biblioteca
Language:eng
Subjects:S50 - Santé humaine, Salmonella, sérotype, Résistance aux antibiotiques, antibiotique, typhoïde, http://aims.fao.org/aos/agrovoc/c_6757, http://aims.fao.org/aos/agrovoc/c_32699, http://aims.fao.org/aos/agrovoc/c_8848, http://aims.fao.org/aos/agrovoc/c_492, http://aims.fao.org/aos/agrovoc/c_29244, http://aims.fao.org/aos/agrovoc/c_3081, http://aims.fao.org/aos/agrovoc/c_8068, http://aims.fao.org/aos/agrovoc/c_666,
Online Access:http://agritrop.cirad.fr/567157/
http://agritrop.cirad.fr/567157/1/document_567157.pdf
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Summary:We report Salmonella enterica serotype Typhi strains with a nonclassical quinolone resistance phenotype (i.e., decreased susceptibility to ciprofloxacin but with susceptibility to nalidixic acid) associated with a nonsynonymous mutation at codon 464 of the gyrB gene. These strains, not detected by the nalidixic acid disk screening test, can result in fluoroquinolone treatment failure.