Ebola, Lassa fever, HIV/AIDS, anthrax, leprosy, meningitis - Drs Joseph McCormick and Susan Fisher-Hoch have confronted, studied, probed and fought them all, case by case and on an epidemic scale. This is their story of a quarter-of-a-century on the front lines of the struggle to hold the narrow line separating humankind from what might well be the true inheritors of the Earth: viruses. This book combines accounts of cutting-edge medical research with dramatic stories of survival in some of the most remote places on Earth, where the climate, the terrain and the politics can kill just as surely as any disease.