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Table 4 ESBL production detected by 3 different combination disks

From: Assessment of the effectiveness of three different cephalosporin/clavulanate combinations for the phenotypic confirmation of extended-spectrum beta-lactamase producing bacteria isolated from urine samples at National Public Health Laboratory, Kathmandu, Nepal

Combination disks used

Criteria for confirmation

No. of suspected ESBL producers

No. of confirmed ESBL positive cases

Total confirmed ESBL positive cases

ESBL negative after confirmation

CPD, CPD+CV

Increase in zone size of ≥5 mm with ≥1 combination disks

68

38

44

24

CTX, CTX+CV

36

CAZ, CAZ+CV

44

  1. CPD cefpodoxime, CAZ ceftazidime, CTX cefotaxime, CV clavulanate