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Hepatitis C virus genotypes in Estonia.

E Zusinaite1, T Krispin, E Raukas

  • 1Department of Internal Medicine, University of Tartu, Estonia.

APMIS : Acta Pathologica, Microbiologica, Et Immunologica Scandinavica
|February 24, 2001
PubMed
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Hepatitis C virus (HCV) genotyping in Estonia revealed subtype 1b as dominant, but with a notable increase in subtype 3a and a decrease in 1b over time. These findings are crucial for understanding HCV epidemiology and treatment strategies.

Area of Science:

  • Virology
  • Epidemiology
  • Molecular Biology

Background:

  • Hepatitis C virus (HCV) infection remains a significant global health concern.
  • Understanding the distribution of HCV genotypes and subtypes is crucial for effective treatment and public health strategies.
  • Estonia's specific HCV epidemiology required detailed investigation.

Purpose of the Study:

  • To determine the distribution of hepatitis C virus (HCV) geno(sub)types in Estonian patients.
  • To compare the efficacy of two genotyping methods: multiplex PCR and RFLP.
  • To analyze the epidemiological dynamics of HCV subtypes in Estonia.

Main Methods:

  • Genotyping of HCV RNA-positive sera from 215 Estonian patients.
  • Utilized multiplex PCR with subtype-specific primers (core region) and RFLP analysis (5' NCR region).

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  • Compared results from both methods for accuracy in identifying single and mixed infections.

    • Main Results:

    • Subtype 1b was the most prevalent (56.3%-64.2%), followed by 3a (13.9%-22.3%) and 2a (5.6%-6.5%).
    • Multiplex PCR and RFLP showed high concordance (84.7%), with PCR being more effective for mixed infections.
    • Epidemiological analysis suggested an increasing trend for subtype 3a and a decreasing trend for subtype 1b.

    Conclusions:

    • HCV subtype 1b is dominant in Estonia, but subtype 3a is emerging.
    • Combined use of multiplex PCR and RFLP enhances genotyping accuracy, especially for mixed infections.
    • The observed shift in subtype prevalence necessitates ongoing surveillance and potential adaptation of treatment guidelines.