Table 1 Antimicrobial sensitivity of Mycobacterium houstonense

trimethoprim sulfamethoxazole

4/76

≤2/38

–

≥4/76

resistant

ciprofloxacin

1

≤1

2

≥4

sensitive

moxifloxacin

≤0.25

≤1

2

≥4

sensitive

cefoxitin

≥128

≤16

32–64

≥128

resistant

amikacin

4

≤16

32

≥64

sensitive

doxycycline

≥16

≤1

2–4

≥8

resistant

tegafycline

0.12

–

–

–

–

linezolid

32

≤8

16

≥32

resistant

imipenem

32

≤4

8–16

≥32

resistant

cefepime

≥32

–

–

–

–

amoxicillin-clavulanate

32/16

–

–

–

–

cefatriaxone

≥64

–

–

–

–

minocycline

4

–

–

–

–

tobramycin

8

≤2

4

≥8

resistant

clarithromycin

≥16

≤2

4

≥8

resistant