The maximum likelihood Phylogenetic tree is based on 409 pb gB gene fragment of EHV-4 isolated from Egypt using IQ-TREE with best Model Finders. The accession numbers with brief GenBank ID are located in each sequence from EHV-4, EH-8, AND EHV-1, The three Egyptian isolates are highlighted in red, and other clades are assigned different colors, and the numbers above the branch represent its length and the bootstrap values computed from 1000 bootstrap repeats. The tree is rooted in the middle.