Figure 5

Autocorrelation in regional ILI incidence during an epidemic period. (top) National ILI epidemic profile. Week 0 is defined as the epidemic peak. (bottom) Moran’s index computed from regional incidence post-stratified on the number of GPs (${\widehat{I}}_n\left(r,t\right)$, dashed) or on the number of consultations (${\widehat{I}}_c\left(r,t\right)$, plain). The horizontal grey line shows the expected value without spatial autocorrelation.