Figure 4.

Asymptomatic, presymptomatic and symptomatic transmissions (as proportion of the total population). (Upper figures): daily cases (yellow bars) and daily detections (blue bars); (Lower figures): daily cases due to asymptomatic transmission (blue bars), presymptomatic transmission (red bars) and symptomatic transmission (orange bars), as given by model Equation (5) for fixed testing capacity. Panel (A): RT-PCR, detection threshold ${log}_{10}\left(V\right)=2$, test return delay 5 days; Panel (B): antigen test, detection threshold ${log}_{10}\left(V\right)=5$, test return delay 0.5 days; Panel (C): paper-strip test, detection threshold ${log}_{10}\left(V\right)=6$, test return delay 0.1 days.