There are six main strains, or genotypes, of hepatitis C - genotypes 1 to 6. Each of these genotypes contain numerous subtypes identified by letters such as genotype 1a, 1b and 3a etc. The prevalence of genotypes vary between countries. The main genotypes found in Australia are genotype 1 and genotype 3.
Why were genotypes important?
Different genotypes respond differently to some of the past and current treatments. There are now treatments that work in all genotypes (pangenotypic).
Genotyping is no longer required prior to therapy. Genotype testing is covered by Medicare for people considering treatment. For more information on testing, visit our hepatitis C testing page.