Disease management: strategies, evaluation

Disease and Geography: An Overview

Types of Diseases

• 🦠 Infectious diseases – spread by pathogens (bacteria, viruses, parasites).
• 🌡️ Non‑communicable diseases – linked to lifestyle (e.g., heart disease, diabetes).
• 🧪 Vector‑borne diseases – transmitted by insects or animals (e.g., malaria, dengue).

Transmission & Spread

Imagine a ripple in a pond. When a person gets infected, the disease spreads through:

1. 👥 Human movement – travel, migration, trade.
2. 🌍 Environmental factors – temperature, rainfall, urban density.
3. 🛠️ Infrastructure – water supply, sanitation, healthcare access.

Key metric: the basic reproduction number, $R_0$. If $R_0 > 1$, the disease can spread; if $R_0 < 1$, it will die out.

Disease Management Strategies

1. 🚫 Prevention – vaccination, hygiene, vector control.
2. 📊 Surveillance – monitoring cases, mapping hotspots.
3. 💊 Treatment – access to medicines, treatment facilities.
4. 📣 Public Education – awareness campaigns, school programs.
5. 🤝 International Cooperation – sharing data, resources, best practices.

Evaluation of Strategies

1. 📈 Effectiveness – reduction in cases, mortality rates.
2. 💰 Cost‑effectiveness – budget impact, resource allocation.
3. ⚖️ Equity – reach to vulnerable populations.
4. 🌱 Sustainability – long‑term viability, local ownership.

Exam Tips

Use the PESTLE framework (Political, Economic, Social, Technological, Legal, Environmental) to structure your answers.

Include real‑world examples (e.g., the 2014–2016 Ebola outbreak in West Africa) to illustrate points.

Show evaluation – discuss both strengths and limitations of each strategy.

📝 Remember to keep your answer concise and to the point.

Quick Reference Table