The book tells us story of how the terrible disease of plague was conquered. Starting from Danilo Samoilovich, a Ukrainian, founder of epidemiology in the Russian Empire, the book explores the journey of finding a cure for plague.The book was translated from Russian by Violet Dutt and was published in1955 by Foreign Languages Publishing House.This translation has been made from the Russian edition published by the Sovetsky Pisatel Publishing House, Moscow 1953.