Table 2. Fold change in abundance of AMR genes found in Enterobacteraciae with >20% allele coverage compared with pretravel, by resistance gene or drug class*.
| Resistance gene or drug class |
Fold change compared with pretravel |
|||||||
|---|---|---|---|---|---|---|---|---|
| Posttravel |
|
30 d |
|
6 mo |
||||
| DNA |
RNA |
DNA |
RNA |
DNA |
RNA |
|||
| β-lactam AMR genes | ||||||||
| AmpC | >100 | >100 | >100 | 1 | >100 | 2 | ||
| AmpH | >100 | >100 | >100 | 2 | >100 | 1 | ||
| CTX | >100 | >100 | >100 | >100 | >100 | >100 | ||
| MrdA | 50 | >100 | 0 | >100 | 5 | >100 | ||
| OXA | 2 | 1 | 1 | 0 | 1 | 0 | ||
| SHV | >100 | >100 | >100 | >100 | >100 | >100 | ||
|
TEM
|
>100 |
64 |
|
54 |
0 |
|
15 |
1 |
| Other antibiotic classes | ||||||||
| Aminoglycoside | 2 | 3 | 1 | 0 | 0 | 0 | ||
| Fluoroquinolone | >100 | >100 | >100 | >100 | >100 | >100 | ||
| Glycopeptide | 0 | 1 | 0 | 0 | 0 | 0 | ||
| Macrolide, lincosamide, streptogramin | 2 | 3 | 1 | 3 | 1 | 1 | ||
| Sulfa | 22 | 29 | 1 | 0 | 0 | 0 | ||
| Tetracycline | 1 | 1 | 1 | 0 | 1 | 0 | ||
| Trimethoprim | >100 | 88 | >100 | 0 | >100 | 1 | ||
*Among 10 participants who submitted samples pretravel (within 1 week before departure), posttravel (within 1 week after return), 30 days posttravel, and 6 month posttravel. AMR, antimicrobial resistance.