Figure 3.

Estimated daily numbers of hospital bed shortages for mild, severe and critical COVID-19 cases in Wuhan, during three periods of 1 to 10 February, 11–20 February, 21–29 February 2020. The estimates are from different scenarios: the real scenario of lockdown since 23 January 2020 with 99% traffic restriction (red bar); the simulation scenario of lockdown since 23 January 2020 with 0% traffic restriction (orange bar); the simulation scenario of lockdown since 23 January 2020 with 50% traffic restriction (yellow bar); the simulation scenario of lockdown since 23 January 2020 with 80% traffic restriction (light green bar); the simulation scenario of no traffic restriction; the simulation scenario of late lockdown since January 3, 2020 with 99% traffic restriction (green bar); and the simulation scenario of early lockdown since February 12, 2020 with 99% traffic restriction (blue bar).