GlaxoSmithKline’s Cervarix was the first HPV vaccine on the market. It provided protection against the two most dangerous strains of the Human Papillomarvirus, 16 and 18. Since newer HPV vaccines have been developed, Cervarix will no longer be sold in theU.S.1
The latest HPV vaccine on the market helps protect against 9 different strains of the Human Papillomavirus. Gardasil 9 protects against HPV types 6, 11, 16, 18, 31, 33, 45, 52, and 58. Most HPV cancers (74%) can be prevented with the vaccine. It is also estimated that the vaccine will prevent 90% of anogenital warts caused by HPV viruses.2
Prior to the FDA approval of Gardasil 9, MERK produced a quadravalent HPV vaccine with the trademark name of Gardasil. The quadravalent vaccine protects against HPV types, 6, 11, 16 and 18, which protects against 64% of all HPV-associated cancers and 90% of anogenital warts.2 The quadravalent vaccine by MERK is still available. Therefore, parents who would prefer to have the Gardasil 9 should ask which vaccine their provider is using.
Another change lies in the administration of the HPV vaccines. Children or teens under the age of fifteen will receive the HPV vaccine in two doses rather than three. The interval between the two injections will be increased to 6 months. The decision is the result of clinical trials showing that younger adolescents (aged 9-14 years) produced immune responses with two doses of the vaccine that were the same as older adolescents receiving 3 doses.3
Medical Institute recommends that parents vaccinate both their male and female children with the HPV vaccines. MI believes that the choice to vaccinate belongs to the parents and should not be mandated by any government agency. Risk avoidance is always the best approach to prevention. Medical Institute encourages abstaining from all sexual activity outside of a mutually monogamous long-term relationship, such as marriage.
- Sagonowsky, Eric, “GSK exits market with its HPV vaccine Cervarix” FiercePharma, Oct 21, 2016. http://www.fiercepharma.com/pharma/gsk-exits-u-s-market-its-hpv-vaccine-cervarix
- CDC, “Provider Information: Gardasil 9 VIS” http://www.cdc.gov/vaccines/hcp/vis/vis-statements/hpv-gardasil-9-hcp-info.pdf
- CDC, “CDC Recommends only two HPV shots for younger adolescents”, CDC Newsroom http://www.cdc.gov/media/releases/2016/p1020-hpv-shots.html?s_cid=govD_HPV-10-20-16_01