A novel genus in the order Picornavirales detected  in human stool.
Recently, four new viruses belonging to an unassigned family within the order Picornavirales were identified in excrements of healthy carp (fisavirus) and pigs (posavirus 1, 2 and 3). We report the detection and characterization of a fifth virus present in human faeces. The virus, named human stool-associated RNA virus (husavirus), contains a single ORF encoding a putative 2993 AA polyprotein, with a Hel-Pro-Pol replication block, typical for the Picornavirales. Phylogenetic analysis revealed that the closest relative to husavirus is posavirus 1, and together they cluster with fisavirus, posavirus 2 and 3 and a roundworm (Ascaris suum) derived virus. Husavirus was detected in eight human stool samples collected in 1984 (n52), 1985 (n54), 1995 (n51) and 2014 (n51). From three strains of husavirus from 1984 and 1985 the full genome sequence was determined, showing less than 5% intraspecies variation in the nucleotide composition. The host of this virus remains to be determined.
Laboratory of Experimental Virology, Department of Medical Microbiology, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
Bas B
BB
Oude Munnink
Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK.
Matthew
M
Cotten
Laboratory of Experimental Virology, Department of Medical Microbiology, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
Martin
M
Deijs
Laboratory of Experimental Virology, Department of Medical Microbiology, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
Maarten F
MF
Jebbink
Laboratory of Experimental Virology, Department of Medical Microbiology, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
Margreet
M
Bakker
Laboratory of Experimental Virology, Department of Medical Microbiology, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
Seyed Mohammad
SM
Jazaeri Farsani
Laboratory of Experimental Virology, Department of Medical Microbiology, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
Marta
M
Canuti
Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK.
Paul
P
Kellam
Laboratory of Experimental Virology, Department of Medical Microbiology, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands.
Lia
L
van der Hoek
D001483:Base Sequence; D005243:Feces / Q000821:virology*; D016679:Genome, Viral; D006801:Humans; D008969:Molecular Sequence Data; D010802:Phylogeny; D012328:RNA Viruses / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D014764:Viral Proteins / Q000235:genetics / Q000378:metabolism
D014764:Viral Proteins