[viruses]
   Order Herpesvirales
     Family Herpesviridae
       Subfamily Betaherpesvirinae
         Genus Roseolovirus
           1 Human betaherpesvirus 7
           2 Human betaherpesvirus 6Aᵀ
           3 Human betaherpesvirus 6B
           4 Macacine betaherpesvirus 9
           5 Murid betaherpesvirus 3
           6 Suid betaherpesvirus 2