TABLE 1

Genotype and phenotype comparison of Salmonella isolates from humans and retail meat, 2011 to 2013a

AntibioticNo. of test resultsSensitivity (%)Specificity (%)PPV (%)NPV (%)
Phenotype: resistantPhenotype: susceptible
Genotype: resistantGenotype: susceptibleGenotype: resistantGenotype: susceptible
Aminoglycosides
    GEN996553094.399.195.298.9
    STR25733534598.890.888.099.1
Beta-lactam/beta-lactam inhibitor
    AMC1142052498.3100.010099.6
Cephems
    FOX9322152497.996.181.699.6
    TIO11304523100.099.296.6100
    CRO11601523100.099.899.1100
Penicillin
    AMP2411139799.699.799.699.7
Folate pathway inhibitors
    FIS2441039599.6100.010099.7
    SXT193061886.4100.010099.5
Macrolide
    AZM100639100.0100.0100100
Phenicol
    CHL4401595100.099.897.8100
Quinolones
    CIP400636100.0100.0100100
    NAL132062586.7100.010099.7
Tetracycline
    TET34900291100.0100.0100100
Total1,70720687,16498.899.196.299.7
  • a Abbreviations: GEN, gentamicin; STR, streptomycin; AMC, amoxicillin-clavulanic acid; FOX, cefoxitin; TIO, ceftiofur; CRO, ceftriaxone; AMP, ampicillin; FIS, sulfisoxazole; SXT, trimethoprim-sulfamethoxazole; AZM, azithromycin; CHL, chloramphenicol; CIP, ciprofloxacin; NAL, nalidixic acid; TET, tetracycline; PPV, positive predictive value; NPV, negative predictive value.