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FINAL - Viruses
Final cumulative virus review
Viral Family | Enveloped? | DNA/RNA structure? | Key viruses | Associated diseases |
---|---|---|---|---|
Parvovirus | No | ssDNA (linear) THE SMALLEST DNA VIRUS | B19 virus | aplastic crisis in sickle cell, erythema infectiosum (5th disease) - slap cheek - may be referred to as erythrovirus in this case), hydrops fetalis |
Papovavirus | No | DS - Circular | HPV, JC Virus | HPV - Warts, CIN, Cervical cancer.JC - Progressive multifocal leukoencephalopathy (PML) in HIV pt |
Poxvirus | Yes | dsDNA, Linear (largest DNA virus) | Poxvirus | Smallpox (eradicated), vaccinia - cowpox (milkmaid blisters), Molluscum contagiosium |
Picornaviruses | No | (+)ssRNA with icosahedral capsule | Poliovirus, Echovirus, Rhinovirus, Coxsackie, HAV | Poliovirus (salk vaccine injection(oral sabin is no longer used). Echovirus - Asepetic meningitis, Rhinovirus - common cold, Coxsackie virus - Asepetic meningitis, herpangina (febrile pharyngitis), HAND FOOT AND MOUTH DISEASE, and myocarditis. HAV - Hep A |
Calciviruses | No | Linear (+)ssRNA Icosahedral capsule | HEV and Norwalk virus | HEV: Hep E; Norwalk virus: viral gastroenteritis |
Reoviruses | No | dsRNA, Linear, Segmented. Icosahedral | Rotavirus, reovirus | Rotavirus: - #1 viral dirrhea (sometimes fatal) in children <2 and in the elderly.Reovirus: Colorado tick fever |
Flavivirus | Yes | (+)ssRNA, Linear, Icosahedral | HCV, flavivirus | HCV - Hep C. Flavivirus: Yellow fever, dengue, St. Louis encephalitis, West nile. |
Togavirus | Yes | (+)ssRNA, Linear, icosahedral | Togavirus | Rubella, Eastern equine encephalitis, western equine encephalitis |
Retroviruses | Yes | (+)ssRNA, Linear, Icosahedral | HIV, HTLV | HIV - AIDS, HTLV - T-cell leukemia. These viruses contain reverse transcriptase |
Coronavirus | Yes | (+)ssRNA, Linear, HELICAL | Corona virus | Common cold and SARS |
Orthomyxovirus | Yes | (-)ssRNA, Linar segmented (compare to paramyxo which is NOT segmented), helical capsule | Influenza virus | Influenza A and B |
Paramyxovirus | Yes | (-) ssRNA, Linear, NON-SEGMENTED (compare to ortho which is segmented), helical | Parainfluenza, RSV | PaRaMyxovirus:Parainfluenza - croup, RSV - bronchiolitis in babies, (rx=ribavirin), measles, mumps. |
Rhabdoviruses | Yes | (-)ssRNA, Linear, helical, | Rabies virus | Rabies |
Filovirus | Yes | (-)ssRNA, Linear, Helical | Filovirus | Ebola/marburg hemorrhagic fever |
Arenavirus | Yes | (-)ssRNA, CIRCULAR, Helical | LCV | Lymphocytic choriomeningitis and mice-borne viral meningitis |
Bunyavirus | Yes | (-)ssRNA, CIRCULAR, helical | Bunyavirus, Hantavirus | California enchephalitis, sand fly / rift valley fever, crimmean-congo hemorrhagic fever. HANTAVIRUS - Hemorrhagic fever, pneumonia |
Deltavirus | Yes | (-)ssRNA, Circular, helical | HDV | Hep D |
Hepadnavirus | Yes | DS - Partial circular | HBV | : Acute / chronic hepatitis. Vaccine available. NOT A RETROVIRUS BUT CONTAINS REVERSE XCRIPTASE |
Herpesvirus | Yes | DS - Linear | HSV-1, HSV-2, VZV, EBV, CMV | HSV-1 - Oral lesions, keratoconjunctivitis.HSV-2 Genital lesionsVZV - Chicken pox, zoster, shinglesEBV - Mono, burkits lymphomaCMV - Immunosupressed pt, xplant recip. Congenital defects |
Adenovirus | No | DS - Linear | Adenovirus | Febrile pharyngitis (sore throat), pneumonia, Conjunctivitis (pink eye) |