TABLE 1

Abundance of resistance genes and mobile genetic elements before and after travel

Resistance gene or mobile genetic elementFold changeAbundance (resistance gene copies per bacterial 16S rRNA)
BeforeAfterDifference
Overall1.060.32070.34080.0201a
Aminoglycoside1.520.00850.01290.0044a
Beta-lactam2.620.00120.00310.0019a
Chloramphenicol0.680.00610.0042−0.0020
Florfenicol26.410.00000.00010.0001
Fluoroquinolone141.510.00000.00040.0004
Lincomycin1.650.00340.00560.0022
Linezolid0.890.00000.00000.0000
Macrolide1.050.03220.03390.0017
Streptogramin0.880.00110.0010−0.0001
Sulfonamide2.610.00090.00230.0014a
Tetracycline1.040.23060.23980.0091a
Trimethoprim7.660.00010.00110.0010a
Vancomycin0.980.03610.0354−0.0007
Integron3.200.00030.00080.0006a
ISCR6.440.00000.00020.0002a
  • a Changes after travel that were significant after correction for multiple testing.