SC-2013 Nylanderia fulva virus 1 O Oakvale sunrhavirus Oat blue dwarf virus Oat chlorotic stunt virus Oat dwarf virus Oat golden stripe virus Oat mosaic virus Oat necrotic mottle virus Oat sterile dwarf virus Obodhiang ephemerovirus Obuda pepper virus Odonata associated gemycircularvirus 1 Odonata associated gemycircularvirus 2 Odonate anphevirus Odonate arlivirus Odonate mivirus Odonate orthophasmavirus Odonate peropuvirus Odontoglossum ringspot virus Odrenisrou phlebovirus Oedaleus senegalensis entomopoxvirus Ohlsdorf ohlsrhavirus Oinezvirus S37C6 Oita ledantevirus Okahandja mammarenavirus Okavirus 1 Okra enation leaf curl alphasatellite Okra enation leaf curl virus Okra leaf curl Oman betasatellite Okra leaf curl Oman virus Okra mosaic virus Okra mottle virus Okra yellow crinkle Cameroon alphasatellite Okra yellow crinkle virus Okra yellow mosaic Mexico virus Olesicampe benefactor ichnovirus Olesicampe geniculatae ichnovirus Olifantsvlei orthobunyavirus Oligodon snake nidovirus 1 Olive latent ringspot virus Olive latent virus 1 Olive latent virus 2 Olive latent virus 3 Olive leaf yellowing-associated virus Olive mild mosaic virus Oliveros mammarenavirus Omegapapillomavirus 1 Omikronpapillomavirus 1 Omsk hemorrhagic fever virus Oncorhynchus aquaparamyxovirus Onion yellow dwarf virus Ononis yellow mosaic virus Onyong-nyong virus Operophtera brumata entomopoxvirus Operophtera brumata nucleopolyhedrovirus Ophiostoma mitovirus 3a Ophiostoma mitovirus 4 Ophiostoma mitovirus 5 Ophiostoma mitovirus 6 Ophiostoma partitivirus 1 Opium poppy mosaic virus Opuntia chlorotic ringspot virus Opuntia virus X Orchid fleck dichorhavirus Ord River hapavirus Ordinary reptarenavirus Orf virus Orgyia leucostigma nucleopolyhedrovirus Orgyia pseudotsugata multiple nucleopolyhedrovirus Oriboca orthobunyavirus Orinoco orinovirus Orivirus A Oriximina phlebovirus Ornithogalum mosaic virus Ornithogalum virus 2 Ornithogalum virus 3 Oropouche orthobunyavirus Orthohepevirus A Orthohepevirus B Orthohepevirus C Orthohepevirus D Orthopteran anphevirus Orthopteran miniambidensovirus 1 Orthopteran scindoambidensovirus 1 Orungo virus Oryctes rhinoceros nudivirus Oryza australiensis RIRE1 virus Oryza longistaminata Retrofit virus Oryza rufipogon alphaendornavirus Oryza sativa alphaendornavirus Oscivirus A Ostreid herpesvirus 1 Ostreococcus tauri virus OtV5 Ostrich associated gemytondvirus 1 Otomops martiensseni polyomavirus 1 Otomops martiensseni polyomavirus 2 Ourmia melon virus Ovine atadenovirus D Ovine gammaherpesvirus 2 Ovine mastadenovirus A Ovine mastadenovirus B Ovine mastadenovirus C Oxalis yellow vein virus Oxbow orthohantavirus Oxyplax ochracea nucleopolyhedrovirus P Pacific coast uukuvirus Pacui pacuvirus Paenibacillus virus Diva Paenibacillus virus Harrison Paenibacillus virus Hb10c2 Paenibacillus virus Lily Paenibacillus virus Rani Paenibacillus virus Shelly Paenibacillus virus Sitara Paenibacillus virus Tripp Paenibacillus virus Vegas Paenibacillus virus Willow Pagavirus S05C849 Pagoda yellow mosaic associated virus Paguronivirus 1 Palmarnavirus 128 Palmarnavirus 156 Palmarnavirus 473 Palyam virus Pan troglodytes polyomavirus 1 Pan troglodytes polyomavirus 2 Pan troglodytes polyomavirus 3 Pan troglodytes polyomavirus 4 Pan troglodytes polyomavirus 5 Pan troglodytes polyomavirus