1. DNA Viruses
   1. Enveloped
      1. dsDNA
         1. Hepadna
            1. Hepatitis B
         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 (Epstein Barr Virus)
         3. Pox
            1. Vaccinia (cow pox)
            2. Variola (small pox)
   2. Non-Enveloped
      1. dsDNA
         1. papova viridae
            1. Papilloma
            2. HPV (human papilloma virus)
            3. Polyoma
            4. JC/BK (CNS diseases & tumors)
         2. Adeno
      2. ssDNA
         1. Parvo B19 (Fifth Disease) (intrauterine infections)