Epidemiology and Health Geography

Active learning works for this topic because students need to see how invisible health data connects to real places they recognize. When teenagers map food access or trace disease spread on a bus route map, abstract concepts like equity and infrastructure become visible and personal.

• 9th Grade
• Geography
• 4 activities
• 25 min–45 min

Learning Objectives

1. Analyze the geographic factors that contribute to the persistence of specific diseases in certain regions.
2. Explain the concept of a 'food desert' and its correlation with public health outcomes in urban and rural areas.
3. Evaluate how global travel networks influence the speed and scale of disease transmission.
4. Compare the accessibility of healthcare services across different socioeconomic neighborhoods within a city.
5. Predict potential health disparities based on the spatial distribution of environmental hazards.

Hexagonal Thinking

⏱ 40 min·Pairs

Mapping Activity: Food Deserts in Our Region

Using USDA food access research atlas data or a simplified printout, student pairs identify food desert census tracts in their county or a nearby urban area. They overlay the map with median income data and calculate the correlation. Pairs present one finding to the whole class, and the class discusses what policy could change the pattern.

Prepare & details

Analyze how globalization accelerates the spread of pandemics.

Facilitation Tip: For the Mapping Activity, pre-select a mix of urban and suburban census tracts so students see both dense food deserts and surprising gaps in wealthy areas.

Setup: Flat table or floor space for arranging hexagons

Materials: Pre-printed hexagon cards (15-25 per group), Large paper for final arrangement

• Analyze
• Evaluate
• Create
• Self-Awareness
• Relationship Skills

Think-Pair-Share

⏱ 25 min·Pairs

Think-Pair-Share: How Does Globalization Spread Disease?

Show students a simplified flight network map and ask: 'If a new respiratory illness appeared in a major hub city today, trace three paths it could take in the first 72 hours.' Students sketch individual routes, compare with a partner, then map the fastest paths on the class whiteboard. Follow with data from the 2003 SARS spread for comparison.

Prepare & details

Explain what a 'food desert' is and how it affects public health.

Facilitation Tip: During the Think-Pair-Share, assign pairs so that one student starts with air travel data and the other with shipping routes to force comparison of different globalization pathways.

Setup: Standard classroom seating; students turn to a neighbor

Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs

• Understand
• Apply
• Analyze
• Self-Awareness
• Relationship Skills

Jigsaw

⏱ 45 min·Small Groups

Jigsaw: Geographic Disease Persistence

Assign four expert groups each a disease that persists in specific geographic regions: malaria, Chagas disease, river blindness, and cholera. Each group reads a one-page brief identifying the geographic conditions that sustain the disease. Groups then reform into mixed teams of four and each expert teaches their disease. The class identifies shared geographic factors.

Prepare & details

Predict why certain diseases persist in specific geographic regions.

Facilitation Tip: In the Case Study Jigsaw, structure expert groups around geographic drivers (climate, policy, migration) so students must integrate multiple causes for disease persistence.

Setup: Flexible seating for regrouping

Materials: Expert group reading packets, Note-taking template, Summary graphic organizer

• Understand
• Analyze
• Evaluate
• Relationship Skills
• Self-Management

Gallery Walk

⏱ 30 min·Small Groups

Gallery Walk: Healthcare Access Deserts

Post maps and statistics showing hospital and primary care shortages in rural US counties alongside urban underserved areas. Students rotate with sticky notes, adding one observation and one question per station. The class synthesizes observations to identify which geographic factors most reliably predict poor healthcare access.

Prepare & details

Analyze how globalization accelerates the spread of pandemics.

Facilitation Tip: For the Gallery Walk, post healthcare access maps at different scales—city, county, state—so students notice how zooming in changes what counts as a 'desert'.

Setup: Wall space or tables arranged around room perimeter

Materials: Large paper/poster boards, Markers, Sticky notes for feedback

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

Teaching This Topic

Teachers approach this topic by making geography the lens, not the backdrop. Avoid starting with definitions of epidemiology before students experience the data firsthand. Instead, let students notice patterns on maps, then name the concept. Research shows that when students experience the 'why' before the 'what,' they retain systemic thinking longer and resist individual-level explanations of complex health problems.

What to Expect

Successful learning shows when students connect geographic patterns to social causes rather than blaming individuals. Students should explain how policy, income, and environment shape health outcomes in specific neighborhoods.

Watch Out for These Misconceptions

Common Misconception

During Mapping Activity: Food Deserts in Our Region, watch for students to claim people in food deserts 'don't like healthy food.'

What to Teach Instead

During Mapping Activity: Food Deserts in Our Region, redirect students to overlay commute times from census blocks using the provided transit layer. Ask them to calculate walking distances to the nearest store and note whether public transit serves those routes.

Common Misconception

During Think-Pair-Share: How Does Globalization Spread Disease?, watch for students to say pandemics spread randomly.

What to Teach Instead

During Think-Pair-Share: How Does Globalization Spread Disease?, hand pairs a map of 2009 H1N1 cases overlaid on global flight paths. Ask them to trace the first three cities with outbreaks and explain why those hubs appeared in that order.

Common Misconception

During Case Study Jigsaw: Geographic Disease Persistence, watch for students to blame lack of hospitals or clinics as the main cause.

What to Teach Instead

During Case Study Jigsaw: Geographic Disease Persistence, require each expert group to present one environmental or policy cause on a sticky note before listing medical resources. Ask them to place the sticky notes on a world map to show non-medical drivers clustered in specific regions.

Assessment Ideas

Discussion Prompt

After Mapping Activity: Food Deserts in Our Region, ask students to share the geographic data they would collect to explain why diabetes rates differ between two neighborhoods. Collect their ideas on the board and have the class vote on the top three most actionable measures for a public health advisor.

Quick Check

During Gallery Walk: Healthcare Access Deserts, provide a blank transparency sheet and ask students to mark two areas they believe could be considered healthcare deserts. Collect sheets to check for proximity to clinics, bus routes, and insurance coverage data used during the walk.

Exit Ticket

After Think-Pair-Share: How Does Globalization Spread Disease?, have students write a short paragraph explaining how container shipping changed disease spread compared to 100 years ago, using the port maps and flight path diagrams discussed during the activity.

Extensions & Scaffolding

• Challenge students to redesign a neighborhood with one full-service grocery store, one community garden, and safe walking routes, using a budget constraint and population density data.
• Scaffolding for the Food Deserts mapping activity: provide a pre-labeled map with only major roads and ask students to add grocery stores from a provided list before calculating distances.
• Deeper exploration: invite a local public health worker to explain how GIS layers (school locations, bus routes, zoning laws) are combined to target interventions.

Key Vocabulary

Epidemiology	The branch of medicine that deals with the incidence, distribution, and possible control of diseases and other factors affecting health.
Health Geography	The study of the location, distribution, and spatial relationships of health and illness in the world.
Food Desert	An area, typically urban, where it is difficult to buy affordable or good-quality fresh food, often due to a lack of supermarkets or grocery stores.
Spatial Diffusion	The movement of a phenomenon, such as a disease or an idea, across space and over time.
Health Inequity	Differences in health outcomes that are systematic, avoidable, and unfair, often linked to social or geographic disadvantage.