The intestinal microbiota predisposes to traveller's diarrhoea and to the carriage of multidrug-resistant Enterobacteriaceae after travelling to tropical regions.

The risk of acquisition of multidrug-resistant Enterobacteriaceae (MRE) and of occurrence of diarrhea is particularly high when travelling to tropical regions, likely owing to suboptimal hygiene living conditions and uncontrolled antibiotic usage. To date, the link between MRE acquisition, traveller's diarrhoea and the microbiota composition in healthy people has not been addressed. Therefore, we analysed the composition of metabolically active microbiota by sequencing the total cDNA from faecal samples before and after the travelling.