Table 1.

Current criteria for selection of Salmonella isolates for phenotypic antimicrobial sensitivity testing by in-agar dilution.

Criteria	No. isolates tested 1 April 2016–31 March 2018
All S. Typhi isolates	457
All S. Paratyphi A isolates	284
All S. Paratyphi B isolates	36
All S. Paratyphi C/Choleraesuis and variants of 6,7:C:1,5 isolates	6
Non-typhoidal Salmonella (NTS) Bacteremia's	433
Invasive or complex NTS clinical cases (from patient sources other than feces and blood and by request).	103
Food, animal and environmental Salmonella isolates	161
From analysis of Salmonella sequencing data: all isolates that genotypically show the presence of one or more extended spectrum ß-lactamase genes	200
From analysis of Salmonella sequencing data: all isolates that genotypically show the presence of one or more extended spectrum ß-lactamase genes	163
From analysis of Salmonella sequencing data: all isolates that genotypically show the presence of one or more Carbapenamase resistance genes	1
From analysis of Salmonella sequencing data: all isolates that genotypically show the presence of two or more macrolide resistance genes	240
From analysis of Salmonella sequencing data: all isolates that genotypically show the presence of one or more colistin resistance genes	45
Total No. Isolates	2,128

Table summarizing the current criteria for phenotypic testing of isolates for antimicrobial resistance testing (AST) and the numbers tested for AST of the 17,899 isolates reported between April 2016 and March 2018. Note, not all resistance gene markers will express phenotypically. Numbers are the total tested, not necessarily the number with antimicrobial resistance.