Fig. 3.
The net benefit of the vaccination as a function of the updating coefficient. Notes: The horizontal axis shows the updating coefficient referring to the vaccine safety (β = 1 means fully efficacy, i.e., pEF = 100%;; β = 0 means no efficacy, i.e., pEF = 0%); the vertical axis shows the utility function of skeptic people. Lines are shown for positive values of the utility function of people aged 80+, 60–79, 40–59, 20–39, based on parameters as in Table 4; people aged 0–19 are not shown as they never have positive utility for efficacies below 100%.