The story of the Warsaw ghetto is one of the most tragic episodes in the Second World War. Using a so-called "threat of typhus" as their "scientific" justification for quarantine, the Nazis crammed almost a half million Jews into a small quarter of the city, depriving them of food, clean water, adequate sanitation, and medical supplies. For three years, from 1940 to 1943, the ghetto inhabitants were packed seven or more to a room, struggling incessantly...