title: Temporal evolution of the distribution of hepatitis E virus genotypes in Southwestern France.
abstract: Southwest France is a highly endemic region for hepatitis E virus (HEV). This study examined the circulation of HEV strains between 2003 and 2014 in the Midi-Pyrénées, and compared these data with those from the rest of France. The polyproline region (PPR) of the ORF1 region of the HEV genome was also analyzed. HEV genotype was determined by sequencing a 348-nt fragment within the ORF2 gene for 333 strains in the Midi-Pyrénées and for 571 strains from the rest of France. PPR region was characterized for 56 strains. The frequency of subgenotype 3f decreased over time, whereas subgenotype 3c increased in the Midi-Pyrénées. Repartition of strains did not differ in the Midi-Pyrénées compared to the rest of France. HEV3i and HEV4 have been recently detected throughout France. PPR lengths showed that two major groups of HEV3f exist. Our study shows that HEV3 distribution in the Midi-Pyrénées was similar to the whole of France. Local dietary habits could explain the higher seroprevalence in the Midi-Pyrénées rather the circulation of a particular variant in this region.
authors.affiliation: INSERM, UMR1043, Toulouse F-31300, France; Department of Virology, National Reference Center for Hepatitis E Virus, CHU Purpan, Toulouse F-31300, France; Université Paul Sabatier, Toulouse, France.
authors.forename: Sebastien
authors.initials: S
authors.lastname: Lhomme
authors.affiliation: INSERM, UMR1043, Toulouse F-31300, France; Department of Virology, National Reference Center for Hepatitis E Virus, CHU Purpan, Toulouse F-31300, France; Université Paul Sabatier, Toulouse, France.
authors.forename: Florence
authors.initials: F
authors.lastname: Abravanel
authors.affiliation: INSERM, UMR1043, Toulouse F-31300, France; Department of Virology, National Reference Center for Hepatitis E Virus, CHU Purpan, Toulouse F-31300, France; Université Paul Sabatier, Toulouse, France.
authors.forename: Martine
authors.initials: M
authors.lastname: Dubois
authors.affiliation: INSERM, UMR1043, Toulouse F-31300, France; Department of Virology, National Reference Center for Hepatitis E Virus, CHU Purpan, Toulouse F-31300, France; Université Paul Sabatier, Toulouse, France.
authors.forename: Sabine
authors.initials: S
authors.lastname: Chapuy-Regaud
authors.affiliation: INSERM, UMR1043, Toulouse F-31300, France; Department of Virology, National Reference Center for Hepatitis E Virus, CHU Purpan, Toulouse F-31300, France; Université Paul Sabatier, Toulouse, France.
authors.forename: Karine
authors.initials: K
authors.lastname: Sandres-Saune
authors.affiliation: Department of Virology, National Reference Center for Hepatitis E Virus, CHU Purpan, Toulouse F-31300, France.
authors.forename: Jean-Michel
authors.initials: JM
authors.lastname: Mansuy
authors.affiliation: INSERM, UMR1043, Toulouse F-31300, France; Université Paul Sabatier, Toulouse, France; Department of Nephrology, Dialysis and Organ Transplantation, CHU Rangueil, Toulouse F-31300, France.
authors.forename: Lionel
authors.initials: L
authors.lastname: Rostaing
authors.affiliation: INSERM, UMR1043, Toulouse F-31300, France; Université Paul Sabatier, Toulouse, France; Department of Nephrology, Dialysis and Organ Transplantation, CHU Rangueil, Toulouse F-31300, France.
authors.forename: Nassim
authors.initials: N
authors.lastname: Kamar
authors.affiliation: INSERM, UMR1043, Toulouse F-31300, France; Department of Virology, National Reference Center for Hepatitis E Virus, CHU Purpan, Toulouse F-31300, France; Université Paul Sabatier, Toulouse, France. Electronic address: izopet.j@chu-toulouse.fr.
authors.forename: Jacques
authors.initials: J
authors.lastname: Izopet
mesh_terms: D019143:Evolution, Molecular; D005602:France; D016679:Genome, Viral; D005838:Genotype; D016751:Hepatitis E / Q000821:virology*; D016752:Hepatitis E virus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D006801:Humans; D008969:Molecular Sequence Data; D010455:Peptides / Q000235:genetics; D010802:Phylogeny; D058974:Phylogeography; D017423:Sequence Analysis, RNA / Q000379:methods
chemical_list: D010455:Peptides; C011083:polyproline
keywords: Distribution; France; Genotype; Hepatitis E; Midi-Pyrénées area