The Viruses
   The RNA Viruses
     The Positive Stranded ssRNA Viruses
       Order Nidovirales
         Family Coronaviridae
           Genus Coronavirus
             01 Bovine coronavirus
             02 Canine coronavirus
             03 Feline coronavirus
             04 Human coronavirus 229E
             05 Human coronavirus OC43
             06 Human enteric coronavirus
             07 Infectious bronchitis virusᵀ
             08 Murine hepatitis virus
             09 Pheasant coronavirus
             10 Porcine epidemic diarrhea virus
             11 Porcine hemagglutinating encephalomyelitis virus
             12 Puffinosis coronavirus
             13 Rat coronavirus
             14 Severe acute respiratory syndrome coronavirus
             15 Transmissible gastroenteritis virus
             16 Turkey coronavirus