In resistance group, alterations at Ser 91 and Asp 95 in gyrA and a single or double alteration in parC were identified in 16 strains (89%).

• 而耐药组中 89%25 (1 6 )菌株的gyr A发生了 Ser- 91向 Phe的单一突变株或 (和 ) par C的双突变 .