Figure 2
From: Spatial, temporal and genetic dynamics of highly pathogenic avian influenza A (H5N1) virus in China
Temporal and spatial K-function results. Spatial K-function calculated for: (a) all infections, (b) poultry and (c) wild birds. Temporal K-function calculated for: (d) all infections, (e) poultry and (f) wild birds. Clusters are shown by thin dashed lines. The peak value in spatial K-function for wild birds represents the outbreaks in Hong Kong, because of data bias.