FIG 1.

EEHV phylogeny and taxonomy. (A) EEHV lines of descent in the context of established herpesvirus taxonomy. With the exception of the EEHV, the taxonomic relationships shown are based on current herpesvirus taxonomy (http://ictvonline.org/). The proposed (indicated with a blue asterisk) Deltaherpesvirinae (δ) subfamily branches from between the Betaherpesvirinae (β) and Gammaherpesvirinae (γ) lineages. In constructing the diagram, it is assumed that the Proboscivirus genus would be retained in the proposed new subfamily, and the diagram indicates the possibility of establishing a new genus for the GC-rich viruses that are shown in panel B. (B) Relationships among the EEHV. AT- and GC-rich branches are shown, as well as the host species for each virus. The host species were Asian elephants (As) or African elephants (Af). This figure was adapted from reference 15.