virology baltimore classification viral replication orthornavirae introduction to viruses oncovirus spillover infection riboviria arbovirus non-cellular life chimera (virus) human virome novel virus broad-spectrum antiviral drug viruses marine viruses neurotropic virus cross-species transmission duplodnaviria mosaic virus pisoniviricetes pisuviricota varidnaviria human viruses in water emergent virus monodnaviria nucleocytoviricota revtraviricetes contagium vivum fluidum papovaviricetes adnaviria kitrinoviricota robovirus lenarviricota
Life_Tree of life (biology)