Table 1: Clinical M. tuberculosis strains used in the study.

Test drugsNumber of strains
Susceptible Resistanta

MXF
 New cases374
 Previously treated cases315
LEV
 New cases404
 Previously treated cases015
KM
 New cases406
 Previously treated cases010
CPM
 New cases395
 Previously treated cases16
ETH
 New cases392
 Previously treated cases06
PAS
 New cases406
 Previously treated cases011

Treatment period of drug in resistant strains was >6 months.