Fig. 4
Changes in contact rates in 16 strategies after 28 April and the corresponding curves of the numbers of daily reported cases in June. a Time-varying contact rate in 16 strategies. Different combinations of colors and line types were used to represent different strategies. b Time-varying daily reported numbers of cases by adopting strategies 1–8. c Time-varying daily numbers of reported cases by adopting strategies 9–16. Shadows represented a 10% random perturbation of the simulation results