Countries that are represented in our collection of 4,516 global adult gut metagenomes. Each country’s pie chart is colored based on the version(s) of pBI143 that is most prevalent in that country (version 1, blue; version 2, red; version 3, green). Each country is colored based on the proportion of versions 1, 2, or 3 present in the population, or gray if fewer than 20% of individuals carry pBI143. Pie charts show the proportions of pBI143 versions in all individuals that carry it within a country. See alsoTable S1andFigure S1.