Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
Volume 11, Number 12—December 2005
Research

Antimicrobial-drug Susceptibility of Human and Animal Salmonella Typhimurium, Minnesota, 1997–2003

Stephanie D. Wedel*Comments to Author , Jeffrey B. Bender†, Fe T. Leano*, David J. Boxrud*, Craig Hedberg‡, and Kirk E. Smith*
Author affiliations: *Minnesota Department of Health, Minneapolis, Minnesota, USA; †University of Minnesota College of Veterinary Medicine, St. Paul, Minnesota, USA; ‡University of Minnesota School of Public Health, Minneapolis, Minnesota, USA

Main Article

Table 1

Multidrug-resistance phenotypes of Salmonella enterica serovar Typhimurium isolates from Minnesota residents and animals, 1997–2003*

Resistance phenotype No. isolates
1997
 1998
 1999
 2000
 2001
 2002
 2003
 Total
167 Hu 150 An 163 Hu 146 An 157 Hu 109 An 152 Hu 67 An 155 Hu 78 An 118 Hu 75 An 116 Hu 91 An 1,028 Hu 716 An
At least pentaresistant 53 132 55 124 50 81 41 49 46 67 22 55 29 72 296 580
AKSSuT 14 76 15 72 11 38 5 18 5 13 2 5 1 10 53 232
ACSSuT 29 18 26 20 26 18 27 17 30 37 12 32 20 38 170 180
At least pentaresistant but not AC or AK 10 38 14 32 13 25 9 14 11 17 8 18 8 24 73 168
ACKSSuT 3 12 4 17 4 4 0 2 0 5 1 2 0 4 12 46
At least ACSSuT + Cr and/or Na†‡ 1 3 0 3 0 3 4 1 5 1 2 4 3 8 15 23
At least AKSSuT + Cr and/or Na†‡ 1 0 0 0 0 0 0 0 1 0 0 0 0 0 2 0
ACSSuT§ + >2 drugs 1 0 0 3 0 1 0 1 4 2 1 1 4 2 10 10
AKSSuT§ + >2 drugs 3 1 1 0 1 0 0 0 1 0 0 3 1 3 7 7
ACKSSuT + >1 drug 1 20 6 8 0 12 3 5 1 3 1 7 1 9 13 64

*Hu, human; An, animal; A, ampicillin; C, chloramphenicol; K, kanamycin; S, streptomycin; Su, sulfisoxazole; T, tetracycline; Cr, ceftriaxone; Na, nalidixic acid.

†Resistance phenotype ACKSSuT isolates are included as ACSSuT but not AKSSuT.

‡Resistance phenotype ACSSuT accounted for 11 (61%) of 18 human ceftriaxone-resistant isolates, 10 (91%) of 11 human nalidixic acid–resistant isolates, 22 (88%) of 25 animal ceftriaxone-resistant isolates, and 2 (50%) of 4 animal nalidixic acid–resistant isolates. Seven human isolates and 1 animal isolate (from a turkey) were resistant to both ceftriaxone and nalidixic acid; all were multidrug resistant; and 6 of 7 human and the animal isolate were also at least ACSSuT. No isolates were resistant to ciprofloxacin.

§Resistance phenotype ACKSSuT not included as ACSSuT or AKSSuT.

Main Article

Page created: February 02, 2012
Page updated: February 02, 2012
Page reviewed: February 02, 2012
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
file_external