| Term | Definition |
| Icosohedral RNA viruses | picornavirus, calcivirus, reovirus, flavivirus, togavirus |
| unenveloped RNA viruses | Picornavirus, calcivirus, reovirus |
| (+) polarity RNA viruses | Picornavirus, calcivirus, coronavirus, togavirus, flavivirus |
| segmented RNA viruses | Reovirus, bunyavirus, arenavirus, orthomyxovirus |
| Picornavirus | Poliovirus, rhinovirus, hepatitis A virus |
| Calcivirus | Norwalk virus Hepatitis E virus |
| Reovirus | Reovirus, rotavirus |
| Orthomyxovirus | Influenza virus |
| Paramyxovirus | Measles virus, mumps virus |
| Rhabdovirus | rabies virus |
| Filovirus | ebola virus, marburg virus |
| Coronavirus | Cornavirus |
| Arenavirus | Lymphocytic choriomenigitis virus |
| Flavivirus | Yellow fever virus, dengue virus |
| Togavirus | rubella virus |
| Bunyavirus | Hantaan virus, Korean Hemorrhagic fever |
| Reovirus | only doublestranded RNA virus |
| Rotavirus | major cause of childhood diarrhea |
| Hepatitis A | can be caused by chile virus |
| Alphavirus | WEE, VEE, EEE (also known as arboviruses (from arthropods) or togaviruses), Identical to rubivirus |
| Lymphocytic choriomengitis | Arenavirus that comes from the slums from rats/mice |
| Hantavirus | Bunyavirus found in the Southwest, like all bunyaviruses it is ambisense |
| Enveloped DNA viruses | herpesvirus, hepadnavirus, poxvirus |
| Unenveloped DNA viruses | Parvovirus, Papovavirus, Adenovirus |
| Poxvirus | Has a complex structure for a DNA virus |
| Parvovirus | only SS DNA virus |
| Parvovirus | B19 virus; no envelop, icosahedral SS, linear DNA virus |
| Hepadnavirus | Hepatitis B virus; enveloped, icosahedral, DS, incomplete circular |
| Papovavirus | Papillomavirus; no envelope, icosahedral, DS, circular, supercoiled |
| Adenovirus | Adenovirus; no envelope, icosahedral, DS, linear |
| Herpesvirus | Herpes simplex virus, varicella zoster virus, cytomegalovirus, EBV; enveloped, icosahedral, DS, linear |
| Poxvirus | Smallpoxvirus, vaccinia virus, enveloped, complex capsid, DS, linear |
| Hepadnavirus | Has a reverse transcriptase |