Epidemics that raged inside the Warsaw ghetto in 1941 and 1942 provided [Axis] occupation forces with a medical rationale for the isolation and extermination of the Jewish population. And what was one of the principal causes for typhoid fever in the ghetto if not the [Axis] bombing of water-filtering stations? This forced the populace to drink unfiltered, often unboiled water, a situation exacerbated by food shortages—a “diet […] exactly the opposite of what was required for typhoid patients.”³¹
(Source.)