Fig. 5From: Stochastic modelling of infectious diseases for heterogeneous populationsThe estimation of two factors in disease spread for 18 districts for 2009 H1N1 pandemic in Hong Kong. δ measures the transmissibility of disease spread within each district. σ measures the transmissibility of disease spread from the neighbors of each region. This figure shows that the imported infections for each district account for a critical factor in the disease spread while the internal effects only play a very small role in the progression of disease spreadBack to article page