TABLE 1

MICs of individual antibiotics tested against M. abscessus ATCC 19977 in vitro

β-Lactam classDrugMIC (μg/ml)
CephalosporinsCefadroxil256
Cefprozil256
Cefuroxime256
Cefixime256
Ceftibuten256
Cefdinir64
Cefditoren256
Cefpodoxime256
Cefoxitin64
CarbapenemsErtapenem256
Meropenem32
Imipenem8
Doripenem16
Biapenem16
Tebipenem256
PenemFaropenem256
RifamycinsRifabutin32
Rifapentine128
Rifampin128
β-Lactamase inhibitorsAvibactam256
Clavulanate256