Currently the widely used one is Gardasil. There are many variants covering a different number of serotypes.
There is also Cervarix which is bivalent preventing HPV types 16 & 18.
Gardasil 9 protects infection with HPV types 6, 11, 16, 18, 31, 33, 45, 52, and 58.
Gardasil comes in a quadrivalent form covering 6, 11, 16 and 18.
HPV types 16 and 18 are thought to be the main causes of about 70% of cervical malignancies. The high-risk HPV strains 31, 33, 45, 52, and 58 are responsible for an additional 10% to 20% of cervical cancer cases.
(Overall there are 12 high-risk HPV types: HPV 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, and 59. )
There are about 200 different strains of HPV and most of them does not pose a big problem.
The advantage of Indian vaccine is mainly the cost.... It's priced very low compared with the others.
