Spatial diffusion of AIV segments of the Mexico outbreak AIV.

<p>The first three panels represent three segments separately (A: HA, B: NA, C: PB2) and D represents the spatial transmission of all 8 segments jointly. The plotted lines represent the branches of the MCC trees for different segments, distinguished by color; the size of each circle represents the number of lineages with that location state. The map source for this figure was OpenStreetMap (<a href="http://www.openstreetmap.org/" target="_blank">http://www.openstreetmap.org/</a>). The spatial diffusions of other five segments (PB1, PA NP, M and NS) on the map are shown in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0107330#pone.0107330.s009" target="_blank">Figure S9</a>.