Isolate matches between mother-infant pairs identified among 126 unique isolates derived from breast milk and infant stool samples collected from 15 mother-infant pairs on 2 consecutive days
| Mother- Infant Pair | Colony ID | Subject ID | Source | Isolate | Barcode Match (%) | Ampicillin | Chloramphenicol | Clindamycin | Erythromycin | Gentamicin | Streptomycin | Tetracycline | Vancomycin | Quinupri/Dalfopri |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FIRST SAMPLING DAY | ||||||||||||||
| E | 396 R1 | 306 | Fecal | Lactobacillus gasseri | 97.7 | 0.19 | 8* | 16* | 2* | 64* | 16 | 6* | 4* | 4 |
| 361 L1 | 3066 | Milk | Lactobacillus gasseri | 0.032 | 4 | 48* | 0.75 | 24* | 16 | 1 | 2* | 1 | ||
| SECOND SAMPLING DAY | ||||||||||||||
| A | 291 L1 | 102 | Fecal | Lactobacillus fermentum | 98.5 | 0.125 | 6* | 0.125 | 0.5 | 6 | 96* | 4 | n.r. (>256) | 0.38 |
| 289 LT2 | 1022 | Milk | Lactobacillus fermentum | 0.19 | 8* | 0.194 | 0.5 | 8 | 128* | 4 | n.r. (>256) | 0.5 | ||
| 291 R3 | 102 | Fecal | Lactobacillus gasseri | 98.2 | 0.19 | 6* | 4* | 0.19 | 6 | 12 | 0.75 | 1 | 0.25 | |
| 289 L1 | 1022 | Milk | Lactobacillus gasseri | 0.19 | 6* | 6* | 0.19 | 8 | 12 | 0.75 | 2 | 0.5 | ||
| C | 312 LT4 | 204 | Fecal | Lactobacillus gasseri | 97.6 | 0.25 | 4 | 3* | 0.125 | 12 | 8 | 1 | 2 | 0.5 |
| 310 L1 | 2044 | Milk | Lactobacillus gasseri | 0.38 | 6* | 3* | 0.25 | 8 | 8 | 2 | 4* | 1 |
*
Asterisk indicates isolate has a MIC higher than the breakpoint for the antibiotic listed and is therefore considered resistant according to EFSA guidelines. n.r. indicates that the antibiotic test is not required due to intrinsic resistance and no breakpoints are listed in EFSA guidelines.