Fig. 3

The daily number of reported infection and the population flow index of the non-Omicron outbreak in Xi’an. a Simulations of daily cases in by time-varying reproduction number according to daily number of reported infection, the bar chart is the daily number of reported infected individuals. b Model estimating the effective reproductive numbers (Rt) in each day by EpiNow2 package. c The daily number of reported infections (bar plot) and population flow index (pink line)