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. 2013 Oct;19(10):1635–1638. doi: 10.3201/eid1910.130609

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Maximum clade credibility tree for influenza A virus N9 subtype genetic lineages in Eurasia. Values along branches are posterior probability values >0.8. Gray bars indicate the 95% highest posterior density for times of the most recent common ancestors. Blue indicates viruses isolated in Asia; green indicates viruses isolated in Europe; purple indicates viruses isolated in Oceania; orange indicates viruses isolated in Africa (details on locations and associated posterior probabilities are shown in the online Technical Appendix, wwwnc.cdc.gov/EID/article/19/10/13-0609-Techapp1.pdf); red indicates A/Hangzhou/1/2013(H7N9) virus; and yellow star indicates the basis of influenza A(H11N9) virus genetic lineage from Asia.