A member of a new Picornaviridae genus is shed in pig feces.
During a study of the fecal microbiomes from two healthy piglets using high-throughput sequencing (HTS), we identified a viral genome containing an open reading frame encoding a predicted polyprotein of 2,133 amino acids. This novel viral genome displayed the typical organization of picornaviruses, containing three structural proteins (VP0, VP3, and VP1), followed by seven nonstructural proteins (2A, 2B, 2C, 3A, 3B, 3C(pro), and 3D(pol)). Given its particular relationship with Parechovirus, we propose to name it "Pasivirus" for Parecho sister clade virus, with "Swine pasivirus 1" (SPaV1) as the type species. Fecal samples collected at an industrial farm from healthy sows and piglets from the same herd (25 and 75, respectively) with ages ranging from 4 to 28 weeks were analyzed for the presence of SPaV1 by one-step reverse transcription (RT)-PCR targeting a 3D region of 151 bp. SPaV1 was detected in fecal samples from 51/75 healthy piglets (68% of the animals) and in none of the 25 fecal samples from healthy sows, indicating that SPaV1 circulates through enteric infection of healthy piglets. We propose that SPaV1 represents the first member of a novel Picornaviridae genus related to parechoviruses.
Institut Pasteur, Laboratory for Urgent Responses to Biological Threats, Paris, France.
Virginie
V
Sauvage
Meriadeg
M
Ar Gouilh
Justine
J
Cheval
Erika
E
Muth
Kevin
K
Pariente
Ana
A
Burguiere
Valérie
V
Caro
Jean-Claude
JC
Manuguerra
Marc
M
Eloit
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D036022:Capsid Proteins / Q000235:genetics; D004279:DNA, Viral / Q000235:genetics; D005243:Feces / Q000821:virology; D005260:Female; D014644:Genetic Variation; D016679:Genome, Viral; D008297:Male; D054892:Metagenome; D008969:Molecular Sequence Data; D030061:Parechovirus / Q000145:classification / Q000235:genetics; D010802:Phylogeny; D010849:Picornaviridae / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification*; D017386:Sequence Homology, Amino Acid; D034421:Sus scrofa / Q000821:virology*; D017201:Virus Shedding
D036022:Capsid Proteins; D004279:DNA, Viral