HPV vaccine is ?
Both bivalent and Quadrivalent Currently, there are two types of cervical cancer vaccines available Gardasil vaccine (quadrivalent vaccine) Cervavarix vaccine (Bivalent vaccine) Gardasil vaccine Gardasil is a quadrivalent human papillomavirus vaccine. Gardasil is the only vaccine that helps protect against 4 types - types 6, 11, 16, 18 - of HPV. - The vaccine helps prevent diseases such as cervical cancer, abnormal and precancerous cervical lesions, vaginal lesions, vulvar lesions, and genital was, caused by these strains of HPV. Gardasil contains recombinant virus like paicle (VLPs) assembled from the Ll proteins of HPVs 6, 11, 16 and 18. - Since VLPs lack the viral DNA, they cannot induce cancer. They do, however, trigger an antibody response that protects vaccine recipients from becoming infected with the HPV Ives represented in the vaccine. Gardasil is recommended to be given to females aged between 9 to 26 years Gardasil provides 98% protection against cervical pre-cancers caused by HPV types 16 & 18, which are responsible for 70% of all cervical cancer cases worldwide. Similarly, in large placebo controlled, double blind, randomized, multicentric studies, the vaccine has also been proven to be 90% effective in the prevention of genital was caused by HPV types 6 and 11, which are responsible for 90% of all genital was cases worldwide. According to the Indian Academy of Pediatrics Committee of Immunization (L4PC01) 2008 recommendations : "This vaccine has a .orable tolerability profile and the IAP-001 recommends offering HPV vaccine to all females as per label. The recommended age for initiation of vaccination is 10-12 years and catch up vaccination is permitted up to the age of 26 years. It is recommended to be given in three doses at 0, 2 and 6 months". Gardasil is usually given in the arm muscle. Three shots are given on the following schedule: - Dose 1 -? - Dose 2 --4 2 months after Dose 1 - Dose 3 -4 6 months after Dose 1 Cervarix Cervarix is a vaccine against HPV types 16 and 18, which currently cause about 70% of cervical cancer cases. - Cervarix is a preventative cervical cancer vaccine, not therapeutic; Cervarix vaccine will not block infection .from cervical cancer-causing HPV strains other than HPV 16, 18, 31 and 45. Cervarix is using the "L1 protein" of the viral capsid. The viral proteins induce the .fonnation of neutralizing antibodies. The vaccine contains no live virus and no DNA, so it cannot infect the patient. Cervari data from patients show that at 18 months after the first of a three-dose regimen, 100 percent of women up to age 55 vaccinated with cervarix vaccine had antibodies present against the two most common cancer-causing human papillomavirus types, 16 and 18. Cervarix Vs. Gardasil: which is the better cervical cancer vaccine ? Cervarix is "bivalent" -effective against only two strains of the virus-vaccine. While Gardasil is "quadrivalent" vaccine (effective against four common strains of HPV). The question now arises which vaccine to be the vaccine of choice?? On the face of it a quadrivalent vaccine seems to be the better choice. In reality that is not so - The vaccine protects against the HPV viruses 16, 18, 6, 11, of which only the .first two are responsible for cervical cancer, while the other two are responsible for genital was. On the other hand cervarix gives protection against 16 and 18. It is better because, there is cross-reactive protection against the virus strains 45 and 31, two other viruses causing cervical cancer. Cervarix is formulated with ASO4, a propriety adjuvant that boosts the immune system response .for a longer period of time. Both vaccines are against the human papillom virus but cervarix seems to be more effective against cancer cervix. Cervarix can be given to females between 10 to 45 yrs old whereas Gardasil can be given to females between 10 to 26 yrs only. Both the vaccines are given in the schedule of 0, 1, 6 months, Cervarix is the costlier one being priced at Rs.3200 per dose. "Cervarix seems to win against Gardasil because of its stronger immune response and broader protection".
Monovalent
Bivalent
Quadrivalent
Both bivalent and Quadrivalent