Human betaherpesvirus 6A (HHV-6A) is a species of virus in the genus Roseolovirus, subfamily Betaherpesvirinae, family Herpesviridae, and order Herpesvirales.[1]
| Human betaherpesvirus 6A | |
|---|---|
Virus classification 
| |
| (unranked): | Virus |
| Realm: | Duplodnaviria |
| Kingdom: | Heunggongvirae |
| Phylum: | Peploviricota |
| Class: | Herviviricetes |
| Order: | Herpesvirales |
| Family: | Orthoherpesviridae |
| Genus: | Roseolovirus |
| Species: |
Human betaherpesvirus 6A
|
| Synonyms | |
|
Human herpesvirus 6 | |
In 1992 the two variants were recognised within Human herpesvirus 6 on the basis of differing restriction endonuclease cleavages, monoclonal antibody reactions,[5] and growth patterns.[6] In 2012 these two variants were officially recognised as distinct species by the International Committee on Taxonomy of Viruses and named Human betaherpesvirus 6A and Human betaherpesvirus 6B.[7] Despite now being recognised as paraphyletic, the name Human herpesvirus 6 still sees usage in clinical contexts.
Human betaherpesvirus 6A affects humans and includes several adult-derived strains. Its disease spectrum is not well defined, although it is thought by some to be more neurovirulent than Human betaherpesvirus 6B.[8][9]
