In vivo selection for transmissible drug resistance in Salmonella typhi during antimicrobial therapy
Author(s) -
Ruth A. Schwalbe,
Charles W. Hoge,
J. Glenn Morris,
P N O'Hanlon,
Robert Crawford,
Peter H. Gilligan
Publication year - 1990
Publication title -
antimicrobial agents and chemotherapy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.07
H-Index - 259
eISSN - 1070-6283
pISSN - 0066-4804
DOI - 10.1128/aac.34.1.161
Subject(s) - salmonella typhi , microbiology and biotechnology , klebsiella pneumoniae , biology , agarose gel electrophoresis , gentamicin , ampicillin , salmonella , antimicrobial , drug resistance , trimethoprim , sulfamethoxazole , virology , tetracycline , chloramphenicol , escherichia coli , antibiotics , bacteria , dna , biochemistry , genetics , gene
We report the recovery of Salmonella typhi that acquired resistance to ampicillin, chloramphenicol, trimethoprim-sulfamethoxazole, and gentamicin subsequent to multiple antibiotic therapy. Escherichia coli and Klebsiella pneumoniae isolates which were recovered from the same stool sample displayed identical resistance patterns. Agarose gel electrophoresis revealed that S. typhi and laboratory-derived transconjugants contained a high-molecular-weight plasmid present in the resistant intestinal bacteria.
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