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Figure 3 | BMC Infectious Diseases

Figure 3

From: Spread of Influenza A(H1N1) oseltamivir-resistant viruses in Africa in 2008 confirmed by multiple introductions in Senegal

Figure 3

Phylogeny of HA1 segment of the HA gene of seasonal A (H1N1) influenza viruses. Phylogenetic analysis of the neuraminadase gene sequences of H1N1 viruses, using MEGA version 5 for constructing Maximum Likelihood Tree using the Tamura-nei evolutionary model. The prototype reference strains for each clade are colored in purple, the contemporary vaccine virus recommended for inclusion of the trivalent influenza vaccine for the 2008/2009 Northern Hemisphere winter is shown in blue ; Viruses from Dakar, Senegal, are shown in red.

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