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Figure 3 | Virology Journal

Figure 3

From: The evolution of human influenza A viruses from 1999 to 2006: A complete genome study

Figure 3

Evolutionary relationships of circulating H3N2 and H1N1 influenza A viruses sampled in Denmark from 1999 to 2006. The nucleotide coding region trees were generated with maximum parsimony, heuristic random branch swapping search (neighbor joining and maximum likelihood analysis revealed the same tree topology). Bootstrap values of 1000 resamplings in per cent (>70%) are indicated at key nodes. The trees for H3N2 and H1N1 PB2, PB1, PA and NP genes are mid-point rooted for means of clarity. Reference sequences referred to in the text are shown in bold. The A/Fujian/411/02(H3N2) reference sequence is represented by A/Wyoming/03/03.

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