Transcript What is Public Health?

A Brief History
of Public Health
What is Public Health?
“To promote health and quality of life
by preventing and controlling
disease, injury, and disability.”
—CDC Mission Statement
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Objectives
• Define public health.
• Describe conditions that existed before
the advent of modern public health.
• Describe three public health interventions
since 1900 that have increased life
expectancy in the U.S.
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Survive the Tribe
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Requirements for Survival
Care
Shelter
Food
Water
Air
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Public Health Codes
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Tribal Rules
Hieroglyphs
Chinese Empire
Bible (Leviticus)
Koran
Roman Senate
• Salus populi: suprema lex esta
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Timeline
• Ancient Greece
• Roman Empire
• Middle Ages
• Birth of Modern Medicine
• “Great Sanitary Awakening”
• Modern Public Health
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Ancient Greeks
(500-323 BC)
• Personal hygiene
• Physical fitness
• Olympics
• Naturalistic concept
• Disease caused by
imbalance between man
and his environment
• Hippocrates
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Hippocrates (b. 460 BC)
• Father of Western medicine
• Causal relationships
• Disease and climate, water,
lifestyle, and nutrition
• Coined the term epidemic
• Epis (“on” or “akin to”)
• Demos (“people”)
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Roman Empire
(23 BC – 476 AD)
• Adopted Greek
health values
• Great engineers
• Sewage systems
• Aqueducts
• Administration
• Public baths
• Water supply
• Markets
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Roman Aqueducts
Le Pont du Gard 11 of 37
Middle Ages
(476-1450 AD)
• Shift away from Greek and
Roman values
• Physical body less important
than spiritual self
• Decline of hygiene and
sanitation
• Beginnings of PH tools
• Quarantine of ships
• Isolation of diseased individuals
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The Plague
Death of
25% to 50%
of population
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Renaissance (1400-1600 AD)
Global Exploration
• Disease, spread by
traders and explorers
• Killed 90% of
indigenous people in
New World
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Age of Reason and
Enlightenment (1650-1800 AD)
Birth of Modern Medicine
• William Harvey
• 1628 theories of circulation
• Edward Jenner
• 1796 cowpox experiment
• Coined the term vaccine
(vacca, Latin for “cow”)
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Industrialization
Urbanization (1800s)
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Great Sanitary Awakening
(1800s-1900s)
• Growth in scientific knowledge
• Humanitarian ideals
• Connection between poverty
and disease
• Water supply and sewage
removal
• Monitor community health
status
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Dr. John Snow
(1813-1858)
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Epidemiology (1854)
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Broad Street Pump
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Map of Diphtheria Deaths
New York City
May 1, 1874 to December 31, 1875
Made under the direction of
W. De F. Day, M.D., Sanitary Superintendent, NYC Health Dept.
www.ihm.nlm.nih.gov
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Growth in Scientific Knowledge
• Louis Pasteur
• 1862 germs caused many diseases
• 1888 first public health lab
• Robert Koch
1822-1895
• 1883 identified the vibrio that causes
cholera, 20 years after Snow’s
discovery
• Discovered the tuberculosis
bacterium
1843-1910
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Sanitary Reform
England
• 1842 Edwin Chadwick’s
“Survey into the Sanitary
Condition of the Labouring
Classes in Great Britain”
• Landmark research
• Graphic descriptions of filth and
disease spread in urban areas
1800-1890
• 1848 General Board of Health
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Sanitary Reform
U.S.
• 1850 Lemuel Shattuck’s
“Report of the Sanitary
Commission of
Massachusetts”
• 1869 State Board of
Health
1793-1859
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Redefining the Unacceptable
“The landmarks of political, economic and social
history are the moments when some condition
passed from the category of the given into the
category of the intolerable…The history of public
health might well be written as a record of
successive redefinings of the unacceptable.”
- Geoffrey Vickers, Secretary, Medical Research Council, Great Britain, 1958
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Redefining the Unacceptable
In the next 5 minutes:
Brainstorm and record a list of
“things” affecting the public’s health
that have passed from tolerable
(accepted) to intolerable
(unaccepted).
Include items that you wish would
become unacceptable.
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Sanitation Revolution
• Clean water; water treatment
• Food inspection
• Soaps, disinfectants, and pharmaceuticals
• Personal hygiene (bathing)
• Public works departments; garbage
collection, landfills, and street cleaning
• Public health departments and regulation
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Twentieth Century
U.S. Mortality Rate: 1900-2001
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11
10
9
8
19
00
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25
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34
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39
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44
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49
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54
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59
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65
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70
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75
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80
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85
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90
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95
20
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Deaths per 1,000
Source: www.infoplease.com
Year
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Public Health Nursing
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Ten Great Achievements in
Public Health, 1900-1999
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3.
Vaccination.
Motor-vehicle safety.
Safer workplaces.
4.
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6.
Control of infectious diseases.
Decline in deaths from coronary heart disease and stroke.
Safer and healthier foods.
CDC, Morbidity and Mortality
7.
8.
9.
Healthier mothers and babies.
Family planning.
Fluoridation of drinking water.
Weekly Report, December 24, 1999
/ 48(50); 1141.
Available at:
http://www.cdc.gov/mmwr/preview/
mmwrhtml/mm4850bx.htm
10. Recognition of tobacco use as a health hazard.
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Challenges Ahead
New and Persistent Problems
in Public Health
Cause of Death (U.S. 1990)
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Tobacco
Diet/Activity
Alcohol
Microbial agents
Toxic Agents
Firearms
Sexual Behavior
Motor Vehicles
Illicit Drug Use
19%
14%
5%
4%
3%
2%
1%
1%
<1%
Tobacco
Diet/Activity
McGinnis & Foege, JAMA, 1993
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World Population Growth
2010
Population (in millions)
8000
7000
6000
5000
4000
3000
1850
2000
1000
0
00 000 000 A D 000 200 400 600 750 850 910 930 950 970 990 010
0
1
1
1
1
1
1
1
1
1
1
1
1
2
-8
-3
-1
Year
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Health Disparities
Access and Outcomes
• Infant Mortality
• Cancer Screening and Management
• Cardiovascular Disease
• Diabetes
• HIV Infection/ AIDS
• Immunizations
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Multiple Determinants
of Health
Policies and Interventions
Behavior
Physical
Environment
Individual
Social
Environment
Biology
Access to Quality Health Care
Source: U.S. Department of Health and Human Services, Health People 2010
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Globalization
• Emerging infectious
diseases
• Reemerging infectious
diseases
• Health disparities
between industrial and
nonindustrial countries
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http://www.healthypeople.gov
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