Table 3.
Minimal Inhibitory Concentration (MIC) results of the isolates as determined using cefotaxime and ceftazidime
|
Sampling location |
MIC results as obtained by micro-broth dilution method* |
|||
|---|---|---|---|---|
|
Cefotaxime (≤ 256 µg ml−1) |
Cefotaxime (≥ 256 µg ml−1) |
Ceftazidime (≤ 256 µg ml−1) |
Ceftazidime (≥ 256 µg ml−1) |
|
|
Chennai (n=188) |
170 |
18 |
175 |
9 |
|
Salem (n=34) |
28 |
4 |
25 |
7 |
|
Tiruchirappalli (n=79) |
70 |
8 |
68 |
13 |
|
Madurai (n=28) |
28 |
2 |
27 |
1 |
|
Tirunelveli (n=22) |
21 |
2 |
19 |
6 |
|
Coimbatore (n=7) |
5 |
2 |
4 |
4 |
|
Total (%) |
322 (89.9) |
36 (10.4) |
318 (88.8) |
40 (11.4) |
|
358 |
358 |
|||
*Bacterial isolates that were found to be ESBL producers by earlier phenotypic studies were taken for MIC determination.