One sided information designed to persuade, to keep moral up for the war effort and/ or vilify the enemy

It sounds like you are describing propaganda. For example, during World War I, the US frequently released posters or news material referring to Germans as "Huns" who were determined to kidnap women, children, and terrorize Europe. Another famous example is that of "Uncle Sam" pointing at the viewer with the text stating "I Want YOU for US Army," the goal of which was to drum up support and encourage people to enlist in the war.

The constant presence of diseases or infectious agents within a given geographic area or population group. it may also refer to the usual prevalence of a given disease with such area or group. it includes holoendemic and hyperendemic diseases. a holoendemic disease is one for which a high prevalent level of infection begins early in life and affects most of the child population, leading to a state of equilibrium such that the adult population shows evidence of the disease much less commonly than do children (malaria in many communities is a holoendemic disease). a hyperendemic disease is one that is constantly present at a high incidence and/or prevalence rate and affects all groups equally. so probably family history.