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 13, Number 3—March 2007

Tandem Repeat Analysis for Surveillance of Human Salmonella Typhimurium Infections

Mia Torpdahl*Comments to Author , Gitte Sørensen†, Bjørn-Arne Lindstedt‡, and Eva Møller Nielsen*
Author affiliations: *Statens Serum Institut, Copenhagen, Denmark; †Danish Veterinary and Food Research, Copenhagen, Denmark; ‡Norwegian Institute of Public Health, Oslo, Norway;

Main Article

Table 2

Clusters identified by MLVA typing that were investigated in the 2-y period, by typing of food and animal isolates and/or patient interviews

Cluster no. and periodNo. Danish isolates (no. Norwegian isolates)Phage type/ PFGE type/ MLVA typeResistance profileDescription of confirmed outbreaks
1. Dec 03–Mar 0416DT104/PFGE014/MLVA133Ampiclilin, sulfomethoxazoleHuman cases from narrow geographic area. Isolate match from local slaughterhouse.
2. Jun–Jul 0421 (1)DT12/PFGE022/MLVA052SensitiveHuman cases from narrow geographic area. Interviews indicated source from local butcher.
3. Aug–Sep 0425 (1)DT12/PFGE022/MLVA056SensitiveHuman cases from narrow geographic area.
4. Aug–Sep 0428NT/PFGE047/MLVA059Ampicillin, streptomycin, tetracylineIsolate match from slaughterhouse.
5. Oct–Dec 049NT/PFGE099/MLVA005 Ampicillin, sulfomethoxazole, streptomycin
tetracyclineIsolate match from imported meat.
6. Jan–Nov 200540DT120/PFGE006/MLVA109 Sensitive
7. Apr–Aug 200515RDNC/PFGE019/MLVA219, MLVA167SensitiveMLVA167 isolate match from pig herd and both MLVA167 and MLVA219 were isolated from meat from the same slaughterhouse.
8. May–Aug 200526DT12/PFGE022/MLVA216 SensitiveHuman cases from narrow geographic area. Isolate match from local slaughterhouse and from local pig herd.
9. Jun–Jul 200512DT104/PFGE014/MLVA238 MR
10. Jun–Oct 200530 (1)DT104/PFGE205, PFGE215/MLVA253, MLVA350, MLVA351, MLVA352 MRInterviews indicated restaurant outbreak. Isolate match from imported beef served as carpaccio in restaurant.
11. Jul–Aug 20059DT136/PFGE208/MLVA266Sensitive
12. Oct–Nov 200522DT193/PFGE084/MLVA301 Ampicillin, sulfomethoxazole, streptomycin, tetracyclineHuman cases from narrow geographic area. Interviews indicated local butcher, and several samples collected from butcher were positive for outbreak profile.
13. Oct–Nov 200511DT104/PFGE014/MLVA203Sensitive
14. Oct–Nov 20057NT/PFGE074/MLVA435Ampicillin, sulfomethoxazole, streptomycin, tetracycline

*MLVA, multiple-locus variable-number tandem repeat analysis; PFGE, pulsed-field gel electrophoresis.

Main Article

Page created: June 29, 2010
Page updated: June 29, 2010
Page reviewed: June 29, 2010
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.