| Characteristics | Examples |
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| Genetic material | | | RNA | HIV, hepatitis A, polio, measles, mumps, rhinovirus, influenza | | DNA | Herpesviruses, hepatitis B, adenoviruses, human papilloma viruses, cytomegalovirus | | Hosts | | | Humans | Measles, mumps, rubella, varicella-zoster, poliovirus | | Humans and animals | Rabies, influenza, hantavirus, encephalitis virus | | Plants | Tobacco mosaic virus, cowpea mosaic virus | | Bacteria | Phages | | Envelope | | | Present | Herpesviruses, rabies, HIV | | Absent | Rotavirus, Norwalk virus, adenovirus | | Respiratory | Influenza, parainfluenza, hantavirus | | Teratogenic | Varicella-zoster virus, cytomegalovirus, rubella | | Neurological and fatal | Rabies | | Paralytic encephalitic | Polio, many encephalitis viruses | | Fulminant | Yellow fever, hantavirus, Ebola-Marburg | | Latent | Herpesviruses | | Cancer causing | Human T-cell lymphotrophic virus, hepatitis viruses, papillomavirus |
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