TABLE 2.
Results of susceptibility tests for 26 clinical isolates of M. tuberculosis exposed to EMBa
| Isolate | Susceptibility to EMB (5.0 μg/ml)
|
|
|---|---|---|
| Proportion method | Flow cytometry | |
| 072 | R | R |
| 152 | S | S |
| 204 | S | R |
| 212 | S | S |
| 231 | S | S |
| 243 | S | S |
| 246 | R | R |
| 253 | S | S |
| 289 | S | S |
| 292 | S | S |
| 299 | S | S |
| 495 | S | S |
| 497 | S | S |
| 498 | S | S |
| 508 | S | S |
| 509 | S | S |
| 514 | S | S |
| 531 | S | S |
| 567 | S | S |
| 705 | S | S |
| 710 | S | S |
| 798 | R | R |
| 813 | S | R |
| 843 | S | S |
| 863 | S | S |
| 982 | S | S |
a
Isolates of M. tuberculosis were exposed to 5.0 μg of EMB/ml. The isolates marked S for the proportion method showed less than 1% of the growth seen on drug-free control plates. The isolates marked S for flow cytometry had susceptibility indexes of 0.75 or less after exposure to EMB for 24 h. Isolates marked R for both methods were considered resistant.