1. RNA Viruses
   1. Enveloped
      1. negative ssRNA
         1. Filo
            1. Ebola
            2. Margurg (haemorrhagic fever)
         2. Paramyxo
            1. Measles
            2. Mumps
            3. RSV (childhood diseases)
         3. Orthomyxo
            1. Influenza A (classical “flu”)
            2. Influenza B
         4. Bunya
            1. Puumala
            2. Hantaan(haemorrhagic fever)
         5. Rhabdo
            1. Rabies
      2. positive ssRNA
         1. Flavi/Toga/Corona
            1. Flavi
            2. Vector Bone
            3. Hepititis C
            4. YFV
            5. JEV
            6. TBE
            7. Dengue
            8. Toga
            9. Rubella
            10. Corona
            11. Corona
            12. SARS
         2. Retro
            1. Lenti/Spuma/Onco
            2. Lenti
            3. HIV-1
            4. HIV-2
            5. BLV/HTLV
            6. HTLV-1
            7. HTLV-2 (leukemia)
   2. Non-enveloped
      1. dsRNA
         1. Reo
            1. Rota (childhood diarrhea)
      2. positive ssRNA
         1. Calici/Astro
            1. Norovirus
         2. Picorna
            1. Rhino
            2. Human rhinovirus (common cold)
            3. Entero
            4. Polio
            5. Coxsackie/Echo
            6. EV71
            7. Aptho
            8. Foot & Mouth disease virus (cattle)
            9. Hepato A
            10. Hepititis A