Fluoroquinolone Resistance inStreptococcus pyogenes
Open Access
- 1 February 2003
- journal article
- case report
- Published by Oxford University Press (OUP) in Clinical Infectious Diseases
- Vol. 36 (3) , 380-383
- https://doi.org/10.1086/345904
Abstract
Streptococcus pyogenes isolated from blood and urine samples obtained from a 78-year-old woman was tested for susceptibility, and fluoroquinolone resistance (minimum inhibitory concentration of levofloxacin, 16 μg/mL) was found. DNA amplification and sequencing revealed a serine81→tyrosine substitution in gyrA and 2 substitutions in parC: serine79→phenylalanine and alanine121→valine. This is the second report of a clinical isolate of S. pyogenes with high-level fluoroquinolone resistance.Keywords
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