TABLE 3.

Numbers of antibiotics for which mutants were detected in nonhypermutable or hypermutable isolates

Type of isolates (n)TestNo. of antibiotics for which mutants were detected/no. tested
≥1≥2≥3≥45
Hypermutable (10)Etest10/1010/1010/109/103/10
Disk diffusion10/1010/1010/109/102/5
Nonhypermutable (25)Etest9/253/250/250/250/25
Disk diffusion9/255/250/250/250/25