Figure 5.

The proportion of simulations in which the first, second, and third symptomatic cases do not emerge in classes A–D. Teacher vaccinated and not vaccinated as well as full and half-sized class scenarios are presented. The horizontal axis indicates the nth symptomatic case. The vertical axes indicate the proportion of simulations, and $\rho$’s in each legend represent the classroom densities in the unit of people per ${\text{m}}^2$.