Lesson Plan

• Describe global prevalence patterns of cholera and interpret incidence data.
• Explain key socio‑environmental risk factors that influence cholera transmission.
• Calculate and interpret the basic reproduction number (R₀) for cholera outbreaks.
• Evaluate mitigation strategies such as water‑sanitation improvements and vaccination.

• Projector and screen
• World map or GIS layers showing cholera incidence
• Handout with data tables and risk‑factor chart
• Calculator or spreadsheet software for R₀ calculations
• Whiteboard and markers

Begin with a striking headline about a recent cholera outbreak to capture interest. Ask students what they already know about water‑borne diseases and link this to the lesson’s success criteria: identify prevalence patterns, explain risk factors, and use R₀ to assess outbreak potential.

1. Do‑now (5’) – Students locate high‑incidence regions on a world map and record observations.
2. Mini‑lecture (10’) – Present prevalence figures, incidence rates, and case‑fatality ratios.
3. Group activity (15’) – Analyse the risk‑factor table; each group creates a poster linking a risk factor to its transmission mechanism and relative risk.
4. R₀ calculation exercise (10’) – Guided practice using sample β and γ values to compute R₀ and discuss outbreak implications.
5. Case‑study discussion (10’) – Examine a recent outbreak (e.g., Haiti 2022) and identify dominant risk factors.
6. Summary & exit ticket (5’) – Students write one key takeaway and one lingering question on a sticky note.

Recap the main points: where cholera is most prevalent, the socio‑environmental drivers, and how R₀ informs control measures. Collect exit tickets for immediate feedback and assign a short homework: research a local water‑sanitation improvement project and prepare a one‑page summary.