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3.
J Clin Virol ; 81: 82-9, 2016 08.
Article in English | MEDLINE | ID: mdl-27367545

ABSTRACT

BACKGROUND: HCV affects 185 million people worldwide and leads to death and morbidities. HCV has a high genetic diversity and is classified into seven genotypes and 67 subtypes. Novel anti-HCV drugs (Direct-Acting-Antivirals) eligibility, resistance and cure rates depend on HCV geno/subtype (GT). OBJECTIVES: Analysis of epidemiological information and viral GT from patients undergoing viral genotyping in 2011-2015. STUDY DESIGN: Anonymized information from 52 centers was analyzed retrospectively. RESULTS: 37,839 samples were included in the study. We show that the GT distribution is similar throughout Western European countries, with some local differences. Here GTs 1 and 2 prevalences are lower and of GT4 higher than in all previous reports. Israel has a unique GT pattern and in South Russia the GT proportions are more similar to Asia. GTs 5 and 6 were detected in very low proportions. Three cases of the recombinant genotype P were reported in Munich (Germany). In addition, we observed that GT proportion was dependant on patients gender, age and transmission route: GTs 1b and 2 were significantly more common in female, older, nosocomially-infected patients, while GTs 1a, 3 and 4 were more frequent in male, younger patients infected by tattooing, drug consume, and/or sexual practices. In infections acquired by drug consume, GTs 1a (35.0%) and 3 (28.1%) prevailed. In infections related to sexual practices lower proportion of GT3 (14.0%) and higher of GT4 (20.2%) were detected. GT4 was mostly abundant in MSM (29.6%). HIV coinfection was significantly associated with higher proportions GTs 1a and 4 (42.5% and 19.3%, respectively). CONCLUSION: Genotype prevalence evolves and correlates to epidemiological factors. Continuous surveillance is necessary to better assess hepatitis C infection in Europe and to take appropriate actions.


Subject(s)
Hepacivirus/genetics , Hepatitis C, Chronic/epidemiology , Hepatitis C, Chronic/virology , Adolescent , Adult , Aged , Europe/epidemiology , Genotype , Hepatitis C, Chronic/transmission , Humans , Israel/epidemiology , Middle Aged , Molecular Epidemiology , Retrospective Studies , Russia/epidemiology , Young Adult
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