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. 2014 Dec 24;14:3. doi: 10.1186/s12862-014-0272-2

Figure 1.

Figure 1

Seasonal Migration to and from North-America. (A) The monthly sampling distribution of included publically available human H3N2 hemagglutinin and neuraminidase sequences in North-America (NA) and a representative sample of other (OT) global communities. (B) The inferred distribution of time for which sampled NA sequences have remained in NA following a migration event. (C) The inferred mean (90% CI) number of migration events to and from NA in different months.