Table 4. Distribution of minimal inhibitory concentration (MIC) for azithromycin in 59 Salmonella isolates.
MIC azithromycin (µg/ml)a | |||||||||||||||||
Serovar (n) | 1.5 | 2 | 3 | 4 | 6 | 8 | 12 | 16 | 24 | 32 | 48 | 64 | 96 | 128 | >256 | MIC 50 | MIC 90 |
S. Choleraesuis (24) | 1 | 1 | 3 | 2 | - | - | - | - | - | 6 | 1 | 3 | 2 | 3 | 2 | 32 | 128 |
S. Paratyphi A (2) | - | - | - | 1 | 1 | - | - | - | - | - | - | - | - | - | NA** | NA | |
S. Typhi (20) | - | 1 | 6 | 10 | 2 | - | - | - | - | - | - | - | 1 | - | - | 4 | 6 |
other NTS (13) | 1 | 2 | 3 | 4 | 1 | - | 1 | - | - | - | - | 1 | - | - | - | 4 | 12 |
NA, not applicable.
epidemiological cutoff point 16 µg/ml.