[2.2] Epidemiology in Public Health Flashcards
Environmental and host factors influence the development of disease
Hippocrates 400 BC
Who wrote the essay entitled “On Airs, Waters, and Places”
Hippocrates 400 BC
Published analysis of mortality data in 1662
John Graunt 1662
First to quantify patterns of birth,
death, and disease occurrence
John Graunt 1662
Noted disparities between males and females, high infant mortality, urban/ rural differences, and seasonal variations
John Graunt 1662
Systematically collecting and analyzing Britain’s mortality statistics
William Farr 1800
Father of Modern Vital Statistics and Surveillance
William Farr 1800
Reporting to health authorities and the general public
William Farr 1800
Father of Field Epidemiology
John Snow 1854
Conducted studies of cholera outbreaks to discover the cause of disease and to prevent its recurrence
John Snow 1854
What century is the British Doctor’s Study about smoking causes lung cancer
19th and 20th Century
Smoking decreases life span up to ____
10 years
What century was the Framingham Heart Study
19th and 20th Century
What study says “Cardiac health is influenced by lifestyle, environmental factors, and inheritance “
Framingham Heart Study
Origin of the term Risk Factor
Framingham Heart Study
The study of the distribution and determinants of health-related states or events in specified populations, and the application of this study to the control of health problems
Epidemiology
Major role of epidemiology is to provide a clue to changes that take place over time in the health problems presenting in the community
Changing Patterns
Populations are facing a rise of non-communicable diseases generally among affluent sections while communicable diseases and under-nutrition still persist among the poorest sections of the society
Double Burden of Disease
Populations suffer from backlog of common infections, undernutrition, and maternal mortality, the emerging challenges of noncommunicable diseases (NCDs), such as cancer, diabetes, heart disease, and mental illness, and the problems directly related to globalization, like pandemics and the health consequences of climate change.
Triple Burden of Disease
Infectious microorganism
Pathogen
Bacteria, Virus, Parasite
Pathogenicity
(ability to cause disease)
Virulence
(severity of a disease)
Chemical and Physical
causes of injury
Agent
Human exposure and
susceptibility
Age and Sex
Behaviors and Practices
Genetic composition,
nutritional and
immunologic status
Host
Extrinsic factors that affect the agent and
opportunity for exposure
Environment
If a high enough proportion of individuals in a population are resistant to an agent, then those few who are susceptible
will be protected by the resistant majority.
Herd Immunity
Refers to the progression of a disease process in an individual over time
Disease Timeline
The stage of subclinical disease, extending from the time of exposure to onset of disease symptoms, is usually called
the [1]_______ for infectious diseases and the [2]_________ for chronic diseases
[1] Incubation period
[2] Latency period
The onset of symptoms marks the transition from subclinical to clinical. Ranging from mild to severe or fatal.
Spectrum of disease