Table 1.

Participant details and number of sequences, OTUs and higher taxa.

Individual, Age	Birth Country	All Reads	Reads Analyzeda	Unique Sequences	OTUs at 3% Differenceb	OTUs at 6% Differenceb	OTUs at 10% Differenceb	Higher Taxac
S1, 39	The Netherlands	154530	100226	4124	630	418	269	95
S2, 29	Brazil	132649	86224	3668	541	370	237	88
S3, 45	The Netherlands	164892	111811	4293	649	434	282	104

^a Only reads that were observed five or more times were included in the analyses.

^b Sequences were clustered into Operational Taxonomic Units (OTUs) at 3%, 6% or 10% genetic difference.

^c Higher taxa refers to genus or to a more inclusive taxon (family, order, class) when sequence could not be confidently classified to the genus level.