Table 3.

Three scenarios for vaccination probabilities

Vaccination scenario	Definition
1	Random vaccination, ${\alpha }_0^{\mathrm{a}}={\alpha }_1^{\mathrm{b}}=0.6$
2	Healthy individuals are more likely to be vaccinated than frail individuals: α 0=0.4, α 1=0.8.
3	Healthy individuals are less likely to be vaccinated than frail individuals: α 0=0.8, α 1=0.4.

^a α ₀ is the probability of vaccination for frail persons

^b α ₁ is the probability of vaccination for health persons