Figure 11

The regions that peak earlier than other regions. The city-county-districts where the influenza peak week is earlier than or equals to \(M_{p}\) for all seven influenza seasons are marked as red in Fig. 11(a). Here, \(M_{p}\) is the median of influenza peak weeks. In Fig. 11(b), we show the metro and rural areas depicted in gray and white, respectively, for comparison