Pathogen transmission
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In medicine, public health, and biology, transmission is the passing of a pathogen causing communicable disease from an infected host individual or group to a particular individual or group, regardles
Respiratory droplets are released through talking, coughing, or sneezing.
Brocky, Karoly - Mother and Child (1846–50)
1940 US WPA poster encouraging modernized privies
Epidemiology
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Epidemiology is the study and analysis of the distribution, patterns and determinants of health and disease conditions in a defined population, and application of this knowledge to prevent diseases.
Pathogen transmission
…the infection has been identified within the reporting location (such as within a country, region or city). The route of transmission is important to epidemiologists because patterns of contact vary between different populations and different groups of populations depending on socio-economic, cultural and other…
Tree of life by Haeckel