Fig. 1

Microbiome profile of crew and built environment samples, all time points included. a–c Violin plots (kernel probability density of Shannon values, displaying the alpha diversity) including individual data points and a box with median and interquartile range. a Sampled surface types: skin of crew and locations of the built environment. b Built environment surfaces: BR (desk in bedroom), KC (kitchen floor), MR (desk in main room), TB (toilet bowl). c Samples from the individual crew members (a–f). d Linear discriminant analysis effect size (LEfSe) on samples from crew and built environment. e LEfSe on samples from built environment surfaces. f LEfSe on samples from individual crew members. g–h Beta diversity represented by PCoA plots based on weighted UniFrac metrics and a rarefaction depth of 3000 ASVs per sample. g Microbial profile of samples from built environment and crew. h Microbial profile of the individual crew members and sampling locations of the built environment