Prevalence of antituberculosis drug resistance among 3634 isolates in China TB survilliance by genotype.

†Isolates resistant to isonazid (n = 744; 20.5%), rifampin (n = 412; 11.3%), ethambutol (n = 287; 7.9%), streptomycin (n = 1073; 29.5%), kanamycin (n = 85; 2.3%), ofloxacin (n = 145; 4.0%), multiple drugs (MDR) (n = 62; 9.9%) or extensively drugs (XDR) (n = 27; 0.7%).‡MDR, multidrug resistant, represents isolates resistant to at least isonazid and rifampin.§XDR, extensively drug resistant, represents isolates resistant to at least rifampicin and isoniazid, as well as any member of the quinolone family and at least one of the following second-line anti-TB injectable drugs.*: P**: P***: P