We used metagenomic next-generation sequencing to longitudinally assess the gut microbiota and antimicrobial resistomes of international travelers to clarify global exchange of resistant organisms. Travel resulted in an increase in antimicrobial resistance genes and a greater proportion of Escherichia species within gut microbial communities without impacting diversity.
Keywords: ESBL; Enterobacteriaceae; antimicrobial resistance; bacteria; extended-spectrum β-lactamase; microbiome; resistome; travel medicine.