2.3.14.docx

5 Pages
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Department
Anthropology
Course Code
ANTHRO 3560
Professor
Sattenspiel

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Description
Plagues and Peoples 02/03/2014 The Infection Process  Classification of host disease status Susceptible  Exposed Incubating Latent Infectious Immune  Transmission doesn’t occur unless there is risk of contact Frameworks for discussing the disease process Transmission framework/symptoms framework  Onset of infection (transmission framework) Infectious agent enters body (symptoms framework)  Latent period (transmission framework) Time from infection with pathogen until person is capable of infecting others Overlaps with, but is not the same as the incubation period  Often shorter than the incubation period Pathogen can be transmitted before symptoms are apparent  Incubation period (systems framework) Time between transmission of an infectious agent and the onset of symptoms or signs of infection  Characteristic of a particular disease  Time variation Variation from individual to individual  Host factors   can be as short as 6­12 hours or as long as 10 years +  Infectious period (transmission  framework)  Begins to show symptoms  Time during which pathogen can be transmitted to susceptible individual  May end before symptoms disappear, at the same time symptoms disappear, or occasionally after  symptoms disappear  When there is a carrier state  Symptomatic illness (symptoms framework)  Time during which an infected person shows symptoms of a disease  Can be highly variable among individuals  Different symptoms may occur at different times within an illness or may be apparent at the same time  Recovery or onset of inactive infection (transmission framework) Symptoms disappear (symptoms framework) Immune State A state in which a person is not susceptible to infection by a particular pathogen May occur after natural infection or as a consequence of vaccination  Artificial immune state  May also occur genetically  Non­genetic immunity may be permanent or temporary  Susceptibili
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