22/08/2025
*Characteristics of DNA and RNA Virus Families of Veterinary Importance*
*DNA Virus Families*
1. *Adenoviridae*
- *Virion Size*: 70-90 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Absent
- *Type of Genome*: Linear, double-stranded DNA
2. *Asfarviridae*
- *Virion Size*: 175-215 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Present
- *Type of Genome*: Linear, double-stranded DNA
3. *Circoviridae*
- *Virion Size*: 17-22 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Absent
- *Type of Genome*: Circular molecule of positive-sense or ambisense, single-stranded DNA
4. *Herpesviridae*
- *Virion Size*: 120-200 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Present
- *Type of Genome*: Single molecule of linear, double-stranded DNA
5. *Papillomaviridae*
- *Virion Size*: 55 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Absent
- *Type of Genome*: Single molecule of circular, double-stranded DNA
6. *Parvoviridae*
- *Virion Size*: 18-26 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Absent
- *Type of Genome*: Single molecule of linear, positive-sense or negative-sense, single-stranded DNA
7. *Poxviridae*
- *Virion Size*: 300 x 200 nm
- *Capsid Symmetry*: Complex
- *Envelope*: Present
- *Type of Genome*: Single molecule of linear, double-stranded DNA
*RNA Virus Families*
1. *Arteriviridae*
- *Virion Size*: 40-60 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Present
- *Type of Genome*: Linear, single molecule of positive-sense, single-stranded RNA
2. *Astroviridae*
- *Virion Size*: 28-30 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Absent
- *Type of Genome*: Linear, single molecule of positive-sense, single-stranded RNA
3. *Birnaviridae*
- *Virion Size*: 60 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Absent
- *Type of Genome*: Two segments of linear, double-stranded RNA
4. *Bornaviridae*
- *Virion Size*: 90 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Present
- *Type of Genome*: Linear, single molecule of negative-sense, single-stranded RNA
5. *Bunyaviridae*
- *Virion Size*: 80-120 nm
- *Capsid Symmetry*: Helical
- *Envelope*: Present
- *Type of Genome*: Three segments of linear, negative-sense or ambisense single-stranded RNA
6. *Caliciviridae*
- *Virion Size*: 27-40 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Absent
- *Type of Genome*: Linear, single molecule of positive-sense, single-stranded RNA
7. *Coronaviridae*
- *Virion Size*: 120-160 nm
- *Capsid Symmetry*: Helical
- *Envelope*: Present
- *Type of Genome*: Linear, single molecule of positive-sense, single-stranded RNA
8. *Flaviviridae*
- *Virion Size*: 40-60 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Present
- *Type of Genome*: Linear, single molecule of positive-sense, single-stranded RNA
9. *Orthomyxoviridae*
- *Virion Size*: 80-120 nm
- *Capsid Symmetry*: Helical
- *Envelope*: Present
- *Type of Genome*: Six to eight segments of linear, negative-sense, single-stranded RNA
10. *Paramyxoviridae*
- *Virion Size*: 150-300 nm
- *Capsid Symmetry*: Helical
- *Envelope*: Present
- *Type of Genome*: Linear, single molecule of negative-sense, single-stranded RNA
11. *Picornaviridae*
- *Virion Size*: 30 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Absent
- *Type of Genome*: Linear, single molecule of positive-sense, single-stranded RNA
12. *Reoviridae*
- *Virion Size*: 60-80 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Absent
- *Type of Genome*: Ten to twelve segments of linear, double-stranded RNA
13. *Retroviridae*
- *Virion Size*: 80-100 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Present
- *Type of Genome*: Diploid, linear, positive-sense, single-stranded RNA
14. *Rhabdoviridae*
- *Virion Size*: 180 x 75 nm
- *Capsid Symmetry*: Helical
- *Envelope*: Present
- *Type of Genome*: Linear, single molecule of negative-sense, single-stranded RNA
15. *Togaviridae*
- *Virion Size*: 70 nm
- *Capsid Symmetry*: Icosahedral
- *Envelope*: Present
- *Type of Genome*: Linear, single molecule of positive-sense, single-stranded RNA