Note: The new recommendations for HCV nomenclature have been published here. A summary of the new system is here.

Genotype	Assigned to	Date
4u	Valerie Thiers	September 2006
2r	Donald Murphy	September 2006
6r	Donald Murphy	November 2006
6s	Donald Murphy	November 2006
6t*	Ling Lu	September 2007
6u*	Ling Lu	February 2008

* Assigned 'confirmed' status because enough unambiguous sequence information was provided.

Genotype	Assigned subtypes
1	a, b, c, d, e, f, g, h, i, j, k, l, m
2	a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r
3	a, b, c, d, e, f, g, h, i, k, l
4	a, b, c, d, e, f, g, h, k, l, m, n, o, p, q, r, s, t
5	a
6	a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u
7	a

The image below shows which regions are defined (meaning there is at least on sequence of that region in the database) for which geno/subtypes. The red colored bar indicates that the genotype is confirmed.

Old designation	New designation
I	1a
II	1b
III	2a
IV	2b
V	3a
VI	3b
4 alpha	4n
4 beta	4o
7a	6e
7b	6d
7c/NGII/VII	6f
7d	6c
NGI	6n
8a	6l
8b	6k
9a	6h
9b	6i
9c	6j
10a/TD3	3k
11a	6g

(genotypes 7-9 reclassified based on Simmonds 1996)

Please note that not all genotype/subtype combinations are defined. Also see Table 2 from the new HCV nomenclature proposal for an overview of recent changes in subtype nomenclature.

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