• Wed. Nov 30th, 2022


Viruses Baltimore classification (7 classes of virus)

Classification of relevant species of viruses which cause diseases around the globe, with links to the officials worldwide prestigious and recognized sources in healthcare literature.





2 3 4 5 6



ssDNA dsRNA (+)ssRNA (-)ssRNA ssRNA(RT)


Class I: dsDNA

Adenoviridae family

  • Mastadenovirus
  • Aviandenovirus

Herpesviridae family (Human herpes virus HHV)

  • HαHV1 – Herpes simplex virus 1 (HSV1) // Simplexvirus genus
  • HαHV2 – Herpes simplex virus 2 (HSV2) // Simplexvirus genus
  • HαHV3 – Varicella-Zoster virus (VZV) // Poikilovirus genus
  • HγHV4 – Epstein-Barr virus (EBV) // Lymphocryptovirus genus
  • HβHV5 – Cytomegalovirus (CMV) // Cytomegalovirus genus
  • HβHV6 – Herpes lymphotropic virus (HLV) // Roseolavirus genus
  • HβHV7 – Human herpesvirus 7 // Roseolavirus genus
  • HγHV8 – Kaposi sarcoma related virus (KSV) // Rhadinovirus
    • (α= alphaherpesvirinae subfamily)
    • (β= betaherpesvirinae subfamily)
    • (γ= gammaherpesvirinae subfamily)

Papovaviridae family

  • Human papillomavirus (HPV)
  • BK polyomavirus
  • JC polyomavirus
  • Simian virus 40 (SV40)

Poxviridae family

  • Smallpox (Variola virus)
  • Molluscum contagiosum

Class II: ssDNA

Parvoviridae family (picodnaviruses)

  • B19 virus related to 5th disease

Class III: dsRNA

Reoviridae family

Class IV: ssRNA(+)

Flaviviridae family

  • Hepatitis C virus (HCV) // Hepatitis virus subfamily // Hepacivirus genus
  • Hepatitis E virus (HEV) // Hepatitis virus subfamily
  • Hepatitis G virus (HGV) // Hepatitis virus subfamily
  • Zika virus (Zikv) // Flavivirus genus
  • Yellow fever virus (YFV) // Flavivirus genus
  • West Nile virus (WNV) // Flavivirus genus
  • Dengue virus (DENV) // Flavivirus genus

Togaviridae family

  • Rubella virus
  • Chikungunya virus (CHIKV)
  • Mayaro virus
  • Ross River Virus (RRV)
  • Barmah forest virus
  • Western Equine Encephalitis virus (WEEV)
  • Alphaviruses not affecting humans

Picornaviridae family

  • Hepatitis A virus (HAV) // Hepatitis virus subfamily //Heparnavirus (enterovirus72)
  • Human Poliovirus // Enterovirus genus
  • Human coxsackievirus // Enterovirus genus
  • Human echovirus // Enterovirus genus
  • Mengovirus // Cardiovirus genus
  • FMDV-C // Aphtovirus genus
  • Rinovirus // Rhinovirus genus

Class V: ssRNA(-)

Orthomyxoviridae family

  • Influenza A virus
  • Influenza B virus
  • Influenza C virus

Filoviridae family

  • Bundibugyo ebolavirus (BDBV) // Ebolavirus genus
  • Reston ebolavirus (RESTV) // Ebolavirus genus
  • Sudan ebolavirus (SUDV) // Ebolavirus genus
  • Tai Forest ebolavirus (TAFV) // Ebolavirus genus
  • Zaire ebolavirus (EBOV) // Ebolavirus genus

Rhabdoviridae Family

  • Rabies lyssavirus (rabies WIO)

Class VI: ssRNA(RT)

Retroviridae family

  • Primate T-lymphotropic virus1 (HTLV1)
  • Human immunodeficiency virus1 (Hiv1)
  • Human immunodeficiency virus2 (Hiv2)
  • Simian foamy virus (SFV)

Class VII: dsDNA(RT)

Hepadnavirudae family

  • Hepatitis B virus (HBV) // Hepatitis virus subfamily
  • Hepatitis D virus (delta-agent) it is not a virus but a virioid and can replicate only thanks to HBV. although it is a virioid it has currently (2017) been put by ITCV inside  the “hepatitis virus – deltavirus” subfamily.

Hepatitis virus focus in purple.

Hexanthematic viruses in red.

Note Well: the links may lead to official pages, which may change their contents over time, accordingly with new discoveries in the field, and the consequent authomated update of the pages. This is done in order to keep high the conciousness of the daily progresses in the research, and to be aware of the dinamicity of the healthcare area.