PATH 3610 Lecture 1: PATH3610 - Notes 1
8 Feb 2017
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Incidence the number of new cases of a disease each year. Prevalence the number of occurrences of the disease in a year and is the total number affected. Morbidity the percentage of a given population that will become affected. Case fatality rate the proportion of individuals who contract a disease that die of that disease in a set period of time (usually one year) Mortality ratio the ratio of the number of deaths from a given disease to the total population. Deter(cid:373)i(cid:374)i(cid:374)g (cid:272)ause of disease is (cid:271)ased o(cid:374) fulfilli(cid:374)g ko(cid:272)h(cid:859)s postulates: the suspected organism must always be present in the lesions. It must be grown in a pure culture on laboratory media. It must cause the same disease when injected into a susceptible animal. It must be recovered from the experimental animal. Incomplete adaptation occurrence of diseases attributed to individuals not being adapted to them. Stimulus/insult and injury: duration, severity, physiological state. Adapt reversible (stimulus = positive: 2.
