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
       Order Nidovirales
      Count: [g] 3f;4g;25s
         Family Coronaviridae
        Count: [g] 2g;20s
           Genus Coronavirus
          Count: 16s
             Severe acute respiratory syndrome coronavirus
            Count: -