Table 1.

Information of available HPV vaccines.

	Bivalent Vaccine Cervarix®	4-Valent Vaccine Gardasil®	9-Valent Vaccine Gardasil9®
Target HPV types	HPV 16/18 (HR-HPV)	HPV 6/11 (LR-HPV) HPV 16/18 (HR-HPV)	HPV 6/11 (LR-HPV) HPV 16/18/31/33/45/52 (HR-HPV)
Schedule	Over 10 years 0, 1, and 6 months	Over 9 years 0, 2, and 6 months	Over 9 years 0, 2, and 6 months
VLP dose	L1 dose 20/20 μg	L1 dose 20/40/40/20 μg	L1 dose 30/30/60/40/20/20/20/20/20 μg
Adjuvant	500 μg aluminum hydroxide, 50 μg 3-O-deacylated-4-monophosphoryl lipid A	225 μg aluminum hydroxyphosphate sulfate	500 μg aluminum hydroxyphosphate sulfate

VLP, virus-like particle; HR-HPV, high-risk HPV type; LR-HPV, low-risk HPV type.