Fig. 3.

Epidemiologic outcomes and equivalent ${\beta }_0$ changes as a function of mask coverage when masks are either much better at blocking outgoing (${\epsilon }_o=0.8$, ${\epsilon }_i=0.2$) or incoming (${\epsilon }_0=0.2$, ${\epsilon }_i=0.8$) transmission. Results are demonstrated for both mask permutations under simulated epidemics with baseline ${\beta }_0$ = 0.5 or 1.5 day ⁻¹.