Properties of HHV-6 and 7
Belong to the betaherpesvirus subfamily of herpesviruses
Double stranded DNA genome of 170 kbp
The main target cell is the T-lymphocyte, although B-lymphocytes may also be infected.
HHV-6 and HHV-7 share limited nucleotide homology and antigenic cross-reactivity.
It is thought that HHV-6 and HHV-7 are related to each other in a similar manner to HSV-1 and HSV-2.