Emerging Infectious Disease ISSN: 1080-6059

Reduced Fluoroquinolone Susceptibility in Salmonella enterica Isolates from Travelers, Finland

Marianne M. Lindgren

, Pirkko Kotilainen, Pentti Huovinen, Saija Hurme, Susanna Lukinmaa, Mark A. Webber, Laura J.V. Piddock, Anja Siitonen, and Antti J. Hakanen

Author affiliations: National Institute of Health and Welfare, Turku, Finland (M.M. Lindgren, P. Kotilainen, P. Huovinen, A.J. Hakanen); Turku University Hospital, Turku (P. Kotilainen, A.J. Hakanen); University of Turku, Turku (S. Hurme); National Institute of Health and Welfare, Helsinki, Finland (S. Lukinmaa, A. Siitonen); University of Birmingham, Birmingham, UK (M.A. Webber, L.J.V. Piddock)

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Figure 1

Ciprofloxacin susceptibility and quinolone resistance in 227 Salmonella enterica isolates collected from travelers returning to Finland from Thailand or Malaysia, 2003–2007. A) Percentage of isolates showing reduced ciprofloxacin susceptibility (black bars, MIC >0.125 µg/mL, p = 0.002). B) Percentage of isolates showing conventional (black bars, MIC of nalidixic acid >32 µg/mL, p = 0.0014) or nonclassical (white bars, MIC of nalidixic acid <32 µg/mL, p = 0.878) quinolone resistance phen

Figure 1. Ciprofloxacin susceptibility and quinolone resistance in 227 Salmonella enterica isolates collected from travelers returning to Finland from Thailand or Malaysia, 2003–2007. A) Percentage of isolates showing reduced ciprofloxacin susceptibility (black bars, MIC >0.125 µg/mL, p = 0.002). B) Percentage of isolates showing conventional (black bars, MIC of nalidixic acid >32 µg/mL, p = 0.0014) or nonclassical (white bars, MIC of nalidixic acid <32 µg/mL, p = 0.878) quinolone resistance phenotype.

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