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Explore the field of epidemiology and the various stages of epidemiologic transition, as well as the health threats faced by different regions. Learn about key terms such as population density, age structure, and crude birth rate. Discover how healthcare provision differs between developed and developing countries.
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Today’s Agenda09.25.2019 • Please pick up one Categorilla from the back of the classroom. • Bellwork • Topic: Epidemiology Reminders: Next week is the end of the 9 weeks. There will be a unit test concerning Population and Migration.
Bellwork09.25.2019 • Take 10 minutes and complete the TWO categorilla – Developing and Developed Countries. • Do not use your phone. Use the US History Textbook in your desk.
Today’s Agenda09.30.2019 Bellwork Epidemiology (wrap up from last week) Frayer Model
Why do Some Regions Face Health Threats? Chapter 2 Key Issue 4
Epidemiologic Transition • Epidemiology – branch of medical science concerned with incidence, distribution, and control of diseases prevalent among a population at a special time and are produced by some special causes not generally present in the affect locality. • Epidemiologic Transition: distinctive health threats in each stage of the demographic transition
Epidemiologic Transition Stages • Stage One: Pestilence and Famine (High CDR) • Black Plague – (25 million) half the population of Europe died
Epidemiologic Transition Stages • Stage Two: Receding Pandemics (Rapidly declining CDR) • Pandemic is a disease occurring over a wide geographic area affecting a very high percentage of the population. • Cholera – outbreak in London mapped by Dr. John Snow (1854) • He used GIS data to record cases of Cholera in the SoHo neighborhood and discovered most cases were around a Street pump
Epidemiologic Transition Stages • Stage Three: Degenerative Diseases (Moderately declining CDR) • Decrease in infectious diseases, Increase in chronic disorders associated with aging • Cardiovascular diseases (heart attacks) and cancer
Epidemiologic Transition Stages • Stage Four: Delayed Degenerative Diseases (Low but increasing CDR) • Because of technology and medicines life is extended even with a degenerative disease • Obesity
Infectious Diseases • Possible Stage 5? • Return of infectious and parasitic diseases – resistant strains, not eradicated • Evolution – resistance to drugs, insecticides (Malaria) • Poverty – unsanitary conditions, can’t afford drugs (TB) • Increases Connections – spread by relocation diffusion (AIDS)
Healthcare (Indicators of Health) • Infant Mortality Rate (IMR) – annual number of infant deaths under one year of age • Life Expectancy – average number of years a newborn infant can expect to live a current mortality levels
Provision of Healthcare • Developed countries spend more on healthcare AND higher percentage of wealth on health care
Medical Services • Europe – 50 hospital beds and 30 doctors per 10,000 people • Sub-Saharan Africa – less than 20 hospital beds and fewer than 5 doctors per 10,000 people • Things to Consider: • Many European nations supplement healthcare but the public expense is great (Taxes) • USA is privatized healthcare “at cost”
Population: vocabulary The following highlighted terms need to have a Frayer model completed for them. You will have a total of 16 Frayer models to turn in. The Demographic and Epidemiological transitional models have 4 each. You can do up to FOUR extra as bonus points of your unit test. Complete your Frayer models on ½ sheets of blank paper. • Population Distribution • Population Density • Arithmetic Density • Physiological Density • Agricultural Density • Arable • Carrying capacity • Age structure • Sex ratio • Population pyramid • Doubling time • Dependency ratio • Zero population growth (ZPG) • Overpopulation • Ecumene • Demographic transition model • Stage 1,2,3 and 4 • Epidemiological transition • Stage 1, 2, ,3 and 4 • Malthusian theory • Rate of natural increase • CDR – Crude Death Rate • CBR – Crude Birth Rate • Total fertility rate (TFR) • Infant mortality rate Definition Characteristics/Facts Term Examples Non-Examples