a disease that is constantly present to a greater or lesser degree in people of a certain class or in people living in a particular location
a disease that occurs in a population with predictable regularity and with only minor deviations from its expected frequency of occurrence
a disease that prevails continually in a region, as opposed to an "epidemic" disease, which is a disease with a relatively abrupt sporadic outbreak
any disease which is infectious and generally recognized as a public health hazard and restricted or peculiar to a locality or region
The constant presence of a disease or infectious agent within a given geographic area or population group; may also refer to the usual prevalence of a given disease within such area or group.
The normal level of disease which is permanently present in a population.