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Volume 11, Number 6—June 2005

Dispatch

Cephalosporin and Ciprofloxacin Resistance in Salmonella, Taiwan

Jing-Jou Yan*, Chien-Shun Chiou†, Tsai-Ling Yang Lauderdale‡, Shu-Huei Tsai*, and Jiunn-Jong Wu*Comments to Author 
Author affiliations: *National Cheng Kung University College of Medicine, Tainan, Taiwan; †Center for Disease Control, Taichung City, Taiwan; ‡National Health Research Institutes, Taipei, Taiwan

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Table 2

Characteristics of 20 Salmonella isolates resistant to extended-spectrum cephalosporins

Serotype Specimen type pI (s) Resistance pattern* gyrA at position†
83 (TCC [Ser]) 87 (GAC [Asp]) parC at position 80 (AGC [Ser])‡ Isolate (restriction pattern of transferred blaCMY-2+ plasmid)§
Albany Urine 9.0 Am ESC Fx Cm Na Sxt Tc† AAC (Asn) SA04.028 (C)
Cairo Stool 9.0, 5.4 Am ESC Fx Cm Na Gm Km Sxt Tc† TTC (Phe) NC04.001 (H1), NC04.002 (H1), NC04.003 (H1)
Urine 9.0 Am ESC Fx Cm Cp Na Sxt Tc TTC (Phe) GGC (Gly) AAC (Arg) NC04.004 (H2)
Chester Stool 9.0 Am ESC Fx NG04.016 (G)
Choleraesuis Wound 9.0, 5.4 Am ESC Fx Cm Cp Na Gm Km Sxt Tc TTC (Phe) AAC (Asn) ATC (Ile) NL04.050 (B)
Blood 9.0, 5.4 Am ESC Fx Cm Cp Na Gm Tc TTC (Phe) AAC (Asn) ATC (Ile) SB04.003 (A)
Blood 9.0, 5.4 Am ESC Fx Cm Cp Na Gm Km Sxt Tc TTC (Phe) AAC (Asn) ATC (Ile) SE04.005 (F), SG04.060
Blood 9.0, 5.4 Am ESC Fx Cm Cp Na Gm Km Sxt TTC (Phe) AAC (Asn) ATC (Ile) SG04.039 (E1), SG04.086
Joint fluid 9.0, 5.4 Am ESC Fx Cm Cp Na Gm Km Sxt Tc TTC (Phe) AAC (Asn) ATC (Ile) SG04.042 (E2), SG04.047 (E4)
Kaduna Tissue 9.0, 5.4 Am ESC Fx Cm Cp Na Sxt Tc TTC (Phe) AAC (Asn) ATC (Ile) CE04.015 (I)
Saintpaul Stool 9.0 Am ESC Fx Gm NG04.011 (G), NG04.018 (G)
Stanley Stool 9.0, 5.4 Am ESC Fx Cm Sxt Tc CG04.039 (D)
Stool 9.0 Am ESC Fx Cm Sxt Tc NB04.022 (A), SE04.006 (E3)

*Am, ampicillin; ESC, extended-spectrum cephalosporins; Fx, cefoxitin; Cm, chloramphenicol, Cp, ciprofloxacin; Na, nalidixic acid; Gm, gentamicin; Km, kanamycin; Sxt, trimethoprim-sulfamethoxazole; Tc, tetracycline.
†The S. Albany isolate and the 3 S. Cairo isolates showed decreased susceptibilities to ciprofloxacin (MIC 0.25–1 μg/mL).
‡Nucleotide and amino acid changes at the QRDRs of gyrA and parC. –, no alterations in the genes.
§For each isolate, the first letter indicates region (C, central region; N, northern region; S, southern region), and the second letter represents hospital. Isolates NC04.001, NC04.002, and NC04.003 were from the same patients; all other isolates were from different patients.

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