Hepatitis B virus taxonomy and hepatitis B virus genotypes

Table 4 HBV subgenotypes and geographic prevalence

	Subgenotype	Synonyms	Geographic origin	Ref.
A	A1	Aa, A’	Africa, (Asia, South America)	[41,87]
	A2	Ae, A-A'	Europe
	A3	Ac	Gabon, Cameroon	[88,89]
	(A4)		Mali	[59]
	(A5)		Nigeria	[59]
B	B1	Bj	Japan	[67,90]
	B2	Ba	Asia without Japan
	B3		Indonesia, Philippines	[7]
	B4		Vietnam	[7]
	B5		Philippines	[91,92]
C	C1	Cs	South East Asia (Vietnam, Myanmar, Thailand, Southern China)	[37-39]
	C2	Ce	Far East (Korea, Japan, Northern China)
	C3		Micronesia	[7]
	C4		Australia	[93]
	C5		Philippines, Vietnam	[92,94]
D	D1		Mongolia, Belarus, Europe?
	D2		India?
	D3		South Africa, East India, Serbia	[40,41]
	D4		Australia	[93]
	D5		East India	[40]
F	F1		South and Central America	[95,96]
	F2		South America	[4]
	F3		Bolivia	[97,98]
	F4		Argentina	[97,98]