The Viruses
Count: [g] 3o;73f;289g;1903s
   The RNA Viruses
  Count: [g] 2o;38f;147g;1053s
     The Positive Stranded ssRNA Viruses
    Count: [g] 1o;24f;91g;690s
       Family Astroviridae
      Count: [g] 2g;9s
         Genus Avastrovirus
        Count: 3s
           Duck astrovirus
          Count: -