h. ducreyi was susceptible to spectinomycin ( minimal inhibitory concentration range , 16 to 64 micrograms/ml ) , thiamphenicol ( 0.12 to 1 microgram/ml ) , chloramphenicol ( 0.12 to 0.5 micrograms/ml ) , and streptomycin ( 4 to 32 micrograms/ml ) and moderately susceptible to kanamycin ( 2 to 8 micrograms/ml ) .
C0039854
thiamphenicol
C0008168
chloramphenicol