Reaper's Run by David VanDyke
When US Marine Sergeant Jill "Reaper" Repeth's blown-off legs begin to regenerate, she thinks it's a medical miracle. But the breakthrough that heals her war injuries is exactly what the government desperately wants to quash - by any means necessary. Hunted, she must cross an America wracked by strife to try to find a family who may already be dead, searching for the inhuman secret of what started it all.
Reaper's Run is an origins story and apocalyptic novel, the beginning of one warrior's journey from tactical cop to freedom fighter and beyond. It leads the reader into the acclaimed Plague Wars science fiction series.