Molecular characterization of genotype 2 and 4 hepatitis C virus isolates in French blood donors
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Jean-François CantaloubePierre GallianSyria LapercheMarie-Hélène ElghouzziYves PiquetFrançoise BouchardeauFrançois JordierPhilippe BiaginiHoussam AttouiPhilippe de Micco
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Organismes :
Anthropologie Bio-Culturelle
Anthropologie Bio-Culturelle
Centre National de Référence Virus des hépatites B, C et Delta
Etablissement Français du Sang - Alpes-Méditerranée
Etablissement Français du Sang - Alpes-Méditerranée
Etablissement Français du Sang - Alpes-Méditerranée
Anthropologie Bio-Culturelle
Anthropologie Bio-Culturelle
Anthropologie bio-culturelle, Droit, Ethique et Santé
Etablissement Français du Sang - Alpes-Méditerranée
Anthropologie Bio-Culturelle
Etablissement Français du Sang - Alpes-Méditerranée
- Publié dans Journal of Medical Virology le 25/10/2020
Résumé : The subtype distribution of 142 genotype 2 and 97 genotype 4 hepatitis C virus (HCV) isolates from the sera of 1,319 volunteer blood donors in France was determined by gene sequencing and by phylogenetic analysis of the NS5B region and E1 envelope. Findings underlined a wide range of subtypes in both genotypes, that is, 20 in HCV-2 and 11 in HCV-4. Eighteen of these 31 subtypes had not been defined previously. Some subtypes, that is, 2a, 2b, 2c, 2i, 2k, 4a, and 4d, showed numerous strains while subtypes in donors from West Africa or Central Africa showed an endemic profile with only a few strains. A Bayesian coalescence approach was used to estimate the demographic history of each HCV subtype. The estimated mean dates of the most recent common ancestors (MRCA) were 1,889 (confidence interval (CI), 1,842-1,930) for HCV-2a, 1,886 (CI, 1,843-1,921) for HCV-2b, 1,791 (CI, 1,699-1,848) for HCV-2c, 1,846 (CI, 1,803-1,878) for HCV-2i, 1,911 (CI, 1,879-1,937) for HCV-4a, and 1,957 (CI, 1,943-1,967) for HCV-4d. The period of spread for subtype 2b, 2c, and 2i was between 1900 and 1960 whereas rapid exponential spread for subtype 2a, 4a, and 4d occurred in the 1960s. The inferred histories of population growth indicated that transmission rates differed according to HCV subtype. These results may help to predict the future burden of HCV in France.
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