nidovirus 1 Bovine orthopneumovirus Bovine papular stomatitis virus Bovine respirovirus 3 Bovine rhinitis A virus Bovine rhinitis B virus Bovine torovirus Bowe orthohantavirus Bozo orthobunyavirus Brassica campestris chrysovirus Brassica oleracea Melmoth virus Brazilian mammarenavirus Brevibacillus virus Abouo Brevibacillus virus Davies Brevibacillus virus Jenst Brevibacillus virus Jimmer Brevibacillus virus Osiris Brevibacterium virus LuckyBarnes Brevicoryne brassicae virus Brisavirus Britarnavirus 1 Britarnavirus 2 Britarnavirus 3 Britarnavirus 4 Brno loanvirus Broad bean mottle virus Broad bean necrosis virus Broad bean stain virus Broad bean true mosaic virus Broad bean wilt virus 1 Broad bean wilt virus 2 Broad-leafed dock virus A Broccoli necrotic yellows cytorhabdovirus Brochothrix virus A9 Brome mosaic virus Brome streak mosaic virus Bromus associated gemycircularvirus 1 Bromus catharticus striate mosaic virus Broome orthoreovirus Brown greater galago prosimian foamy virus Brucella virus Pr Brucella virus Tb Bruges orthohantavirus Brugmansia mild mottle virus Brugmansia mosaic virus Brugmansia suaveolens mottle virus Brunnich mivirus Bubaline alphaherpesvirus 1 Buenaventura phlebovirus Bujaru phlebovirus Bukalasa bat virus Bulbul coronavirus HKU11 Bundibugyo ebolavirus Bunyamwera orthobunyavirus Burdock mottle virus Burdock yellows virus Burkholderia virus AH2 Burkholderia virus AP3 Burkholderia virus Bcep1 Burkholderia virus Bcep22 Burkholderia virus Bcep43 Burkholderia virus Bcep781 Burkholderia virus BcepC6B Burkholderia virus BcepF1 Burkholderia virus Bcepil02 Burkholderia virus Bcepmigl Burkholderia virus BcepMu Burkholderia virus BcepNazgul Burkholderia virus BcepNY3 Burkholderia virus BpAMP1 Burkholderia virus DC1 Burkholderia virus JG068 Burkholderia virus KL1 Burkholderia virus KL3 Burkholderia virus KL4 Burkholderia virus KS14 Burkholderia virus KS5 Burkholderia virus phi1026b Burkholderia virus phi52237 Burkholderia virus phi6442 Burkholderia virus phiE122 Burkholderia virus phiE125 Burkholderia virus phiE202 Burkholderia virus phiE255 Burkholderia virus ST79 Bushbush orthobunyavirus Butterbur mosaic virus Butterfly flower mosaic virus Buttonwillow orthobunyavirus Buzura suppressaria nucleopolyhedrovirus Bwamba orthobunyavirus C Cabassou virus Cabbage cytorhabdovirus Cabbage leaf curl Jamaica virus Cabbage leaf curl virus Cacao bacilliform Sri Lanka virus Cacao mild mosaic virus Cacao phlebovirus Cacao swollen shoot CD virus Cacao swollen shoot CE virus Cacao swollen shoot Ghana M virus Cacao swollen shoot Ghana N virus Cacao swollen shoot Ghana Q virus Cacao swollen shoot Togo A virus Cacao swollen shoot Togo B virus Cacao yellow mosaic virus Cacao yellow vein banding virus Cache Valley orthobunyavirus Cachoeira Porteira orthobunyavirus Cacipacore virus Cactus mild mottle virus Cactus virus 2 Cactus virus X Cadicivirus A Cadicivirus B Caenorhabditis elegans Cer1 virus Caenorhabditis elegans Cer13 virus Cafeteria roenbergensis virus Cafeteriavirus-dependent mavirus Caimito pacuvirus Cajanus cajan Panzee virus Caladenia virus A Calanthe mild mosaic virus Cali mammarenavirus Calibrachoa