Abstract
Background: Hepatitis C virus (HCV) shows considerable genetic heterogeneity among isolates from all over the world. Six main groups of sequence variants are recognized. Genotype 1,2 and 3 are most common in North America and Europe, genotype 4 is most common in Middle East, genotype 5 and 6 are common in South East Asia. In India, genotype 3 is most common and genotype 2 is least common. The knowledge about the genotype distribution of HCV in a geographical area may help for treatment plan and also provide clues about the outcome of HCV related liver disease in that area.
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