ANTH 2450H Lecture Notes - Lecture 2: Microorganism, Commensalism, Spirochaete
15 Dec 2016
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Anth 2450 13/01/16 lecture 2: epidemiological principles. Part 1 of the assignment should be approx. Epidemiology: the study of the distribution, dynamics, and determinants of disease. Paleo epidemiology: epidemiology of long dead individuals. Disease is any state, organic or psychic, real or imaginary, that disturbs a person"s sense of well-being. Infection is the state when a microorganism has become established in a host and clinically detected. Infection does not usually result in disease. Infectivity is the ability of a pathogen to infect a host. Contagious disease is any disease that is transmitted from person to person. Number of people one sick person will affect is the basic reproduction number (ro) Carrier is a person who is infected with a particular microorganism but shows no symptoms and can pass on the disease to others (e. g. hiv, hepatitis, typhoid) Pathogen is any microorganism that can cause disease. Pathogens are: viruses, bacteria, fungi, protozoa, parasites, and protein.
