The viral "metropolises" of your skin

In the microbial metropolises that thrive in and on the human body, underground networks of viruses loom large. A closer look at human skin has found that it's teeming with viruses, most of which don't target us but infect the microbes that live there.

Almost 95 percent of those skin-dwelling virus communities are unclassified...Those unknown viruses may prune, manipulate, and hide out in the skin’s bacterial communities, which in turn can make the difference between human health and disease... — Ars Technica