Table 1. Most bacterial phylotypes are only found on very few humans; only a minority is more widespread.

	phylotypes	% human samples
phylotypes present on<50% people	2188	1–10
	97	11–20
	31	21–30
	12	31–40
	17	41–50
23 “oligarchs”, present on>50% people	11	51–60
	4	61–70
	2	71–80
	2	81–90
	4	91–100