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Reconstruction of the Evolutionary Dynamics of the A(H1N1)pdm09 Influenza Virus in Italy during the Pandemic and Post-Pandemic Phases

Figure 4

Map representing the localities of origin of the pandemic (red) and post-pandemic (blu) clades.

The circle diameter is proportional to the number of isolates sampled in the locality. The low panel histogram represents the population density (number of inhabitants/km2).

Figure 4