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Epidemics can be modeled as diseases spreading over networks of contact between people. Such a network can be represented mathematically with a graph and is called the contact network. [ 20 ] Every node in a contact network is a representation of an individual and each link (edge) between a pair of nodes represents the contact between them.
An epidemic curve, also known as an epi curve or epidemiological curve, is a statistical chart used in epidemiology to visualise the onset of a disease outbreak. It can help with the identification of the mode of transmission of the disease. It can also show the disease's magnitude, whether cases are clustered or if there are individual case ...
For a given epidemic or pandemic, the average of its estimated death toll range is used for ranking. If the death toll averages of two or more epidemics or pandemics are equal, then the smaller the range, the higher the rank. For the historical records of major changes in the world population, see world population. [3]
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The term epidemiology is now widely applied to cover the description and causation of not only epidemic, infectious disease, but of disease in general, including related conditions. Some examples of topics examined through epidemiology include as high blood pressure, mental illness and obesity. Therefore, this epidemiology is based upon how the ...
Disease clusters, or spatial groupings of proximity and characteristically related epidemics. While the term itself is relatively poorly defined, it generally “implies an excess of cases above some background rate bounded in time and space.” [ 1 ] Although clustering is not the most precise method for spatial analysis, it can and has proved ...
The gauge of real epidemics is whether they respond to the canonical interventions of public health — detecting a new communicable threat, tracking and informing those infected before they are ...
Typically, people meet their closest lifelong friends through work and school, said Levine, who founded the Friendship Blog. But the COVID-19 pandemic closed those spaces for years.