epidemiology and public health introduction part ii n.
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Epidemiology and Public Health Introduction, Part II. Changing Patterns of Community Health . Health patterns in constant state of flux Infectious versus chronic diseases Population and age-related. Chain of Infection. Etiological agent Source/Reservoir Portal of exit

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Presentation Transcript
changing patterns of community health
Changing Patterns of Community Health
  • Health patterns in constant state of flux
  • Infectious versus chronic diseases
  • Population and age-related
chain of infection
Chain of Infection
  • Etiological agent
  • Source/Reservoir
  • Portal of exit
  • Mode of transmission
  • Portal of entry
  • Susceptible host
modes of transmission
Modes of Transmission
  • Contact transmission
  • Vehicle transmission
  • Vector transmission
classes of epidemics
Classes of Epidemics
  • Common source (vs. sporadic)
    • Point source
    • Intermittent
    • Continuous
    • Propagated

Your Assignment:

Define these terms

& identify which apply

to the following

three graphs

disease investigation
Disease Investigation
  • Establish diagnosis
  • Identify specific agent
  • Describe according to person, place and time
  • Identify source of agent
  • Identify mode of transmission
  • Identify susceptible populations
epidemiology and clinical practice
Epidemiology and Clinical Practice
  • Clinical practice dependent on epidemiology
  • Epidemiology defines natural history of disease
  • Even descriptive information is useful
the epidemiologic approach
The Epidemiologic Approach
  • Multistep process
  • First - determine association
  • Then prove causation
  • Not all associations are causal
  • Examine validity, false assumptions-
    • e.g. - fluoride in water
analytic studies
Analytic Studies
  • Type of study
  • Design
  • Analysis of data
epidemiology and prevention
Epidemiology and Prevention
  • Identify high risk populations
  • Modify risks
  • Prevent exposures
levels of prevention
Levels of Prevention
  • Primary
  • Secondary
  • Tertiary
levels of prevention cont d
Levels of Prevention (cont’d)
  • Primary
    • Involves halting any occurrence of a disease or disorder before it happens
levels of prevention cont d1
Levels of Prevention (cont’d)
  • Secondary
    • Health screening and detection activities
levels of prevention cont d2
Levels of Prevention (cont’d)
  • Tertiary
    • Retard or block the progression of condition