Question

in which of the following ways could the bits game be changed to incorporate the idea of vaccination? (there may be more than one correct answer.)
a. choose 5 people before the game who will be vaccinated. during the game, any time they are across from a person who is sick they will not roll the die and they will not become infected.
b. choose 5 additional people to start the simulation in the infected category.
c. choose 5 people before the game who will be vaccinated. each of them starts the game as recovered.
d. have the individuals who catch the illness be infected for two days, then become sick before they recover.
e. choose 5 people before the game who will be vaccinated. instead of getting sick, these people remain in the infected category for two days then jump to recovered.

Explanation:

• Option A: Vaccination is supposed to prevent infection. If vaccinated people don't roll the die (which might represent exposure - related risk) and don't get infected when exposed (across from a sick person), this mimics the protective aspect of vaccination.
• Option C: If people are vaccinated (chosen before the game) and start as recovered (immune - like state), this can be seen as a way of incorporating vaccination (as vaccination can lead to an immune state similar to recovery in some models).
• Option E: Vaccinated people not getting sick (remaining in infected category but not getting the full - blown illness and then recovering) can be a way to model vaccination - induced protection (they are exposed but not severely affected and then gain immunity).

• Option B: Choosing additional people in the infected category has nothing to do with vaccination. It just increases the number of initial infecteds.
• Option D: This is about the progression of the illness (infected for two days then sick before recovery) and not related to vaccination.

Answer:

A. Choose 5 people before the game who will be vaccinated. During the game, any time they are across from a person who is sick they will not roll the die and they will not become infected.
C. Choose 5 people before the game who will be vaccinated. Each of them starts the game as recovered.
E. Choose 5 people before the game who will be vaccinated. Instead of getting sick, these people remain in the infected category for two days then jump to recovered.