Regional, seasonal, and antimicrobial resistance distributions of salmonella typhimurium in Canada: a multi-provincial study.

Background: This study was conducted to describe the geographical and seasonal distributions of reported human Salmonella Typhimurium (ST) definitive type 104 (DT104) cases, to compare these characteristics to those of non-DT1 04 cases, and to investigate specific antimicrobial resistance (AMR) patterns in four Canadian provinces.

Methods: All laboratory-confirmed ST cases originating from passive reporting in Alberta, British Columbia, and Saskatchewan, and every second case in Ontario identified from December 1999 through November 2000 were investigated.

Results: A total of 470 human Salmonella Typhimurium cases were identified during the study period.