1. DNA Viruses
   1. Enveloped
      1. dsDNA
         1. Hepadna
            1. HBV
         2. Herpes
            1. Alpha-herpes
            2. HSV-1
            3. HSV-2
            4. VZV
            5. Beta-herpes
            6. CMV (cytomegalovirus)
            7. HHV-6
            8. Gamma-herpes
            9. EBV (Ebstein Barr Virus)
         3. Pox
            1. Vaccinia (cow pox)
            2. Variola (small pox)
   2. Non-Enveloped
      1. ssDNA
         1. B19 (intrauterine infections)
      2. dsDNA
         1. Adeno (Polyoma + papilloma)
            1. papova viridae
         2. Polyoma
            1. JC/BK (CNS diseases & tumors)
         3. Papilloma
            1. HPV (human papilloma virus)