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Lecture 2

HLTH 101 Lecture Notes - Lecture 2: Public Health, Flu Season, Food Safety

Health Studies
Course Code
HLTH 101
Elaine Power

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Week 2: Population Health
The population health approach
The difference between population and individual health
Public Health
Main goal: To prevent disease and promote health
Recognize the importance of individual contributions
Understanding how to reduce alleviate risks by addressing underlying causes
Examples for Public Health Response
Water health contamination
(mandatory water testing)
Seasonal influenza/ early childhood disease
Food contamination
(Food safety regulations)
Smoking restrictions
Mandatory physical activity in elementary schools
Public health approach:
Improve the health of the entire population
Reduce health inequalities among population groups
Check graphs in lecture slide for male diabetes, female premature mortality and male colorectal
cancer incidence
Two Key consideration in public health approach:
Exposure to small risks in large populations will produce more adverse health outcomes than
exposure to large risks in a smaller number of people
Individuals risks of illness cannot be considered in isolation from the risk for the population
(child is more likely to die by the age of 5 in India than a child by the age of 5 in Canada)
Lyme Disease
Someone in Ontario is more likely to get lyme disease than someone in BC because the
distribution of lyme disease
Still want to target the entire population
Policy/ Intervention levels
Level 1: Influencing individual lifestyles
Level 2: strengthening community support
Level 3: improving living conditions
Level 4: Long term structural changes
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