We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleContinuing progress towards a unified nomenclature for the highly pathogenic H5N1 avian influenza viruses: divergence of clade 2·2 viruses.AuthorsWHO/OIE/FAO H5N1 Evolution Working GroupPublicationInfluenza & Other Respiratory Viruses, 2009, Vol 3, Issue 2, p59ISSN1750-2640Publication typearticleDOI10.1111/j.1750-2659.2009.00078.x