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We know what ecological degradation looks like: Clearcut hillsides, vanishing elephants and whales, forests overtaken with kudzu, and Florida swamps filled with Burmese pythons. These constitute a poignant, convenient visual shorthand for landscapes out of balance -- so convenient, in fact, that it's easy to forget about the ecological communities we can't see.

What is the clearcutting equivalent for bacteria? How does the changing environment look to a virus? In other words, what is the disease landscape of the Anthropocene?