Fig. 1

Relative frequency (median) and variability (interquartile range) of the 20 most abundant bacterial genera, among participants born in the mainland USA and those born in Latin America. Bar plots show the top 20 OTUs by order of abundance combined at the genus level using the phyloseq package. Boxes were colored based on the degree of statistical significance between US-born and foreign-born participants according to Wilcoxon signed-rank test to evaluate statistical significance between groups