0 the appearance of a particular disease in a large number of people at the same time: --
a flu epidemic
1 a particular problem that seriously affects many people at the same time: --
a crime/unemployment epidemic
2 happening a lot and affecting many people: --
Poverty in this country has reached epidemic proportions .
3 the appearance of a particular disease in a very large number of people during the same period of time: --
a flu epidemic
High mortality rates are usually linked with war and epidemics.
The magnitudes of the epidemics and the time interval between them, were dependent on the rate at which fish were added to the populations.
Among the different epidemiological situations, human hypo- to hyperendemic areas, including epidemics, are noteworthy.
We conjecture that antibodies lacking in durability have become prevalent in the population resulting in the disappearance of large epidemics since 1992.
Larger post-immunization epidemics may however, still occur if coverage is not maintained at uniformly high levels.
Serious morbidity and mortality associated with influenza epidemics.
We assume an initial infection prevalence of between 2 and 10 % at the start of the simulated epidemics.
Very few studies have estimated the impact of measles epidemics in a group of vaccine decliners on a surrounding population of vaccine acceptors.
