Materials and results about type A influenza classification can be downloaded from this webpage.

1. Main results: Table S1 and Table S2.

Table S1 has 16 sheets which correspond to 16 HA subtypes, while Table S2 has 9 sheets which correspond to 9 NA subtypes. Each sheet of them has 9columns. The first column includes information about the grouping got in this analysis. The second column includes GenBank accession numbers of sequencesin this analysis. Column 3 to 9 is associated with sequence name, virus host, viral HA and NA subtype, isolation country, isolation continent and isolation timerespectively. Therefore, for each sequence in the present analysis, if you search it using its GenBank, you can find a clear and unambiguous group to which itbelongs.

2. Phylogenetic diversity of type A influenza given in a tree-like hierarchy format.

These figures display the phylogenetic diversities and distribution of type A influenza viruses in a tree-like hierarchy format except for H14 and H15 subtype strains. In these figures, labels of leaves have been standardized into six parts separated by underscores. They correspond to group name, host type, HA or NA subtype, continent from which the viruses is isolated, time when the virus is isolated, and number of sequences in this group, respectively.

PS: Viruses of H14 and H15 subtypes are not analyzed because there are too few sequences available.

3. Alignments of the 16 HA subtypes and 9 NA subtypes:

4. Figures of principal coordinates analysis (PCCORD)

PS: Most figures display the first and second axes and few display the first and third axes. In all figures, each sequence is shown as a dot using shapes to signify host and colours to indicate geographic region.

5. Phylogenetic trees:

PS: Please go to our manuscript for the details how these trees are constructed.

6. Original tree files (Please click the right button of the mouse and select "Save as ..." to download.):

If you still have any question, please do not hesitate to send me an email: weifeng.shi@ucd.ie. Thank you for your interest in our paper.