Fig. 2.

Bacterial community distances between keyboard keys and fingertips. Mean pairwise distances between keys from the same keyboard (black bar), between individual's fingertips and their own keyboard keys (hatched bar), and between individual's fingertips and keys from keyboards not belonging to them (gray bar). Average unweighted and weighted UniFrac distances for each individual are shown (A and B, respectively). Lower UniFrac values indicate that the communities are more similar on average. Bars show 95% confidence intervals for the means. Graph demonstrates that the fingertips of an individual harbor bacterial communities more similar to those found on the keys of that individual's keyboard than to those communities found on keyboard keys not touched by the individual.