A measly 20% dead might be something we could handle without too much trouble (and it would certainly be a relief for the nonhuman inhabitants of the planet). Sixty percent sick, though, not so much. Imagine half the people responsible for delivering your food, maintaining your water supply, and keeping your ATMs online call in sick for a few weeks; imagine that half their backups call in sick as well. Historically, once the infrastructure collapses even in a single city, it takes mere hours for people to start killing each other over food; check out what happened in New Orleans in the wake of
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