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communicable diseses
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communicable diseases common communicable diseases antperson to person diseases droplet diseses contact diseases
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COMMUNICABLE DISEASESBY
GITONGA A.M
, EPIDEMIOLOGY
Defined by John M. Last in 1988
• “Study of Distribution and Determinants of
health related state or event in a specified
population and the application of this study to
the control of health problem”.
• We measure –
– Disease frequency
– Diseases distribution
– Determinants of disease.
, CONCEPTS OF EPIDEMIOLOGY
• The word Epidemiology comes from the greek
word epi;demos,logos
• Epi meaning on or upon
• Demos meaning people
• Logos meaning study of
• Epidemiology has its roots on what befalls a
population
, CONCEPTS OF EPIDEMIOLOGY
1.Epidemiology – Is the study of the frequency,
distribution and determinants of health-related states
or events in specific human population and prevention
and control for health related events.
2.Prevalence – This is the number of existing cases or
health related events in a population in a -given time.
3.Incidence - These are the number of new cases in a
given population and during a specific period of time.
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