Ciprofloxacin-Resistant Salmonella enterica Serotype Typhi, United States, 1999–2008

Abstract

We report 9 ciprofloxacin-resistant Salmonella enterica serotype Typhi isolates submitted to the US National Antimicrobial Resistance Monitoring System during 1999–2008. The first 2 had indistinguishable pulsed-field gel electrophoresis patterns and identical gyrA and parC mutations. Eight of the 9 patients had traveled to India within 30 days before illness onset.

Keywords

• Salmonella Typhi
• ciprofloxacin
• antimicrobial drug resistance
• fluoroquinolones
• typhoid fever
• bacteria