Focus on hepatitis C virus genotype distribution in Tunisia prior to elimination: a 16-year retrospective study.
Journal
Archives of virology
ISSN: 1432-8798
Titre abrégé: Arch Virol
Pays: Austria
ID NLM: 7506870
Informations de publication
Date de publication:
Feb 2021
Feb 2021
Historique:
received:
13
07
2020
accepted:
30
10
2020
pubmed:
5
1
2021
medline:
5
2
2021
entrez:
4
1
2021
Statut:
ppublish
Résumé
With the introduction of direct-acting antiviral treatment (DAA), Tunisia has committed to achieving the international goal of eliminating viral hepatitis. Because the specific DAA prescribed depends on viral genotype, viral genotyping remains of great importance. The aim of the present study was to outline the trends in the distribution of HCV genotypes from 2002 to 2017 in the Tunisian general population in order to guide authorities towards the most appropriate therapeutic strategies for preventing HCV infection. A total of 2532 blood samples were collected over a 16-year period and from all regions of Tunisia. Genotyping showed that genotype 1 (subtype 1b) was the most prevalent genotype in the country (n = 2012; 79.5%), followed by genotype 2 (n = 339; 13.3%). Genotypes 3, 4 and 5 were detected in 4.8%, 2.2% and 0.1% of the country's population, respectively. Mixed infections with different HCV genotypes were detected in 0.1% of the population (one case each of genotypes 1b + 4, 1b + 2 and 2 + 4). Interestingly, a significant increase in genotypes 2, 3 and 4 was observed over time (p = 0.03). Sixteen different subtypes were detected over the study period, most of which were subtypes of genotype 2, and some of these subtypes appeared to be new. Patients infected with genotypes 1a, 3 and 4 were significantly younger than those infected with genotypes 1b and 2 (p < 0.01). Furthermore, genotypes 1b and 2 were detected more often in women than men, while genotypes 1a and 3 were detected mostly in men (P < 0.01). Our study confirms a large predominance of genotype1/subtype1b in Tunisia and shows a significant increase in the prevalence of other genotypes over time. These findings reinforce the need for an additional HCV genotype survey to improve the design of treatment strategies in Tunisia.
Identifiants
pubmed: 33394169
doi: 10.1007/s00705-020-04918-7
pii: 10.1007/s00705-020-04918-7
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
501-510Subventions
Organisme : centre d'investigation clinique
ID : CIC2016IPT02
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