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The '''HPV vaccine''' ('''Gardasil''') is a product developed by [[Merck]] which protects against a few strains of a sexually transmitted disease.  Specifically, this vaccine protects against types 6, 11, 16 and 18 of the human papillomavirus  

The '''HPV vaccine''' exists as 2 products, Gardasil (marketed by [[Merck]] and protecting against types 6, 11, 16 and 18 of the [[HPV|human papillomavirus]]) and Cervarix (marketed by [[GlaxoSmithKline]] and protecting against types 16 and 18 only).

(HPV), which is transmitted only by sexual contact with a partner. Genital warts are most commonly associated with HPV–6 and HPV–11. HPV types 16 and 18 together are found in about 70 percent of cervical cancers. <ref>National Cancer Institute:  Human Papillomaviruses and Cancer: Questions and Answers [http://www.cancer.gov/cancertopics/factsheet/Risk/HPV]</ref>

 

Genital warts are most commonly associated with HPV–6 and HPV–11. HPV types 16 and 18 together are found in about 70 percent of cervical cancers. <ref>National Cancer Institute:  Human Papillomaviruses and Cancer: Questions and Answers [http://www.cancer.gov/cancertopics/factsheet/Risk/HPV]</ref>

Only about 3% of women are infected in their lifetime by these four types of HPV (Types 6, 11, 16, 18) targeted by the vaccine.<ref name="JAMA">This was confirmed by a study published February 28, 2007 in the Journal of the American Medical Association, JAMA 297(8):813-819, February 28, 2007.  "HPV vaccine types 6 and 11 (low-risk types) and 16 and 18 (high-risk types) were detected in 3.4% of female participants ...."[http://jama.ama-assn.org/cgi/content/full/297/8/813]</ref>  The vaccine is very expensive and has been associated with severe adverse reactions, including paralysis and death.<ref>[http://www.telegraph.co.uk/health/healthnews/3758983/Schoolgirl-12-paralysed-after-receiving-cervical-cancer-jab.html 12-year-old paralyzed]</ref>

Only about 3% of women are infected in their lifetime by these four types of HPV (Types 6, 11, 16, 18) targeted by the vaccine.<ref name="JAMA">This was confirmed by a study published February 28, 2007 in the Journal of the American Medical Association, JAMA 297(8):813-819, February 28, 2007.  "HPV vaccine types 6 and 11 (low-risk types) and 16 and 18 (high-risk types) were detected in 3.4% of female participants ...."[http://jama.ama-assn.org/cgi/content/full/297/8/813]</ref>  The vaccine is very expensive and has been associated with severe adverse reactions, including paralysis and death.<ref>[http://www.telegraph.co.uk/health/healthnews/3758983/Schoolgirl-12-paralysed-after-receiving-cervical-cancer-jab.html 12-year-old paralyzed]</ref>