1. Vaccination game
Summary from VC2: results from trial survey; cholera; spatial spread model

2. Vaccination game 32 Vaccinated 32 Susceptible
Summary from VC2: results from trial survey; cholera; spatial spread model
32 Susceptible

3. Vaccination game 32 Vaccinated 32 Susceptible
Summary from VC2: results from trial survey; cholera; spatial spread model
32 Susceptible

4. Vaccinated Susceptible Infected N W E S
Summary from VC2: results from trial survey; cholera; spatial spread model

5. Vaccinated Susceptible Infected Remove to create first case 1 N W E S
Summary from VC2: results from trial survey; cholera; spatial spread model

6. Vaccinated Susceptible Infected Remove to create first caseW E S
Remove to create first case
Infect susceptible neighbours 1
Summary from VC2: results from trial survey; cholera; spatial spread model

7. Vaccinated Susceptible Infected Remove to create first case 2W E S
Remove to create first case
Infect susceptible neighbours
Repeat until epidemic over 2 1
Summary from VC2: results from trial survey; cholera; spatial spread model 2

8. Vaccinated Susceptible Infected Remove to create first caseW E S
Remove to create first case
Infect susceptible neighbours
Repeat until epidemic over 3 2 1
Summary from VC2: results from trial survey; cholera; spatial spread model 3 2 3

9. Vaccinated Susceptible Infected 4 Remove to create first caseW E S 4
Remove to create first case
Infect susceptible neighbours
Repeat until epidemic over 4 3 2 1
Summary from VC2: results from trial survey; cholera; spatial spread model 3 2 3 4 4

10. Vaccinated Susceptible Infected Remove to create first caseW E S
Remove to create first case
Infect susceptible neighbours
Repeat until epidemic over
Record total cases
Summary from VC2: results from trial survey; cholera; spatial spread model

11. Vaccinated Susceptible Infected Remove to create first caseW E S
Remove to create first case
Infect susceptible neighbours
Repeat until epidemic over
Record total cases
Try with 48 vaccinated/16 not
Summary from VC2: results from trial survey; cholera; spatial spread model

12. ? R0 < 1 R0 > 1 Reproduction number (R0)
R0 measures how quickly an epidemic will take off…
R0 < 1
Cases decrease each step
R0 > 1
Cases increase each step

13. Herd immunity
Summary from VC2: results from trial survey; cholera; spatial spread model

14. Herd immunity • Rabies 0 • Flu 1–2 • Ebola (West Africa) 1–2
Proportion of the population we need to vaccinate: R0
• Rabies 0
• Flu 1–2
• Ebola (West Africa) 1–2
• Chickenpox 10
• Measles 16–18
Summary from VC2: results from trial survey; cholera; spatial spread model

15. Herd immunity R0 Vaccinate • Flu 1–2 1/2 • Ebola (West Africa) 1–2 1/2
Proportion of the population we need to vaccinate: R0
R0 Vaccinate
• Flu 1–2 1/2
• Ebola (West Africa) 1–2 1/2
• Chickenpox /10
• Measles 16–18 17/18
Summary from VC2: results from trial survey; cholera; spatial spread model