Figure 6.

Time in days to the emergence of first, second, and third symptomatic individuals in classes A–D for teacher vaccinated and not vaccinated and for full and half-sized class scenarios. The horizontal axis labels $n\mathit{th}$ symptomatic case. The vertical axis indicates time in days. Horizontal lines within each box indicate medians, and $\rho$’s in each legend represent the classroom densities in the unit of people per ${\text{m}}^2$.