Washington, May 13 (IANS) A new human papillomavirus (HPV) vaccine can potentially prevent 80 percent of cervical cancers if given to all 11- or 12-year-old children before they are exposed to the virus, says a US-based study.
A common sexually transmitted infection, HPV can spread through vaginal, anal, or oral sex with someone who has the virus.
In addition to protecting against 80 percent of cervical cancers, the new 9-Valent HPV vaccine, which includes seven cancer causing HPV-types, has the potential to protect against nearly 19,000 other cancers, including anal, oropharyngeal and penile cancers, the researchers noted.
This is a 13 percent increase in protection against HPV-related cancers in comparison to the first vaccines on the market, Gardasil and Cervarix, which protected against HPV types 16 and 18.
"This is the first comprehensive study of its kind and shows the potential to not only reduce the global cancer burden, but also guide clinical decision-making with regard to childhood vaccinations," said senior author of the study Marc Goodman from Cedars-Sinai Samuel Oschin Comprehensive Cancer Institute.
The US Centers for Disease Control and Prevention initiated the research effort in conjunction with Cedars-Sinai Medical Centre in California.
The study found the 9-Valent vaccine, under the trademark of Gardasil-9, also has the potential to protect against an additional eight percent of oropharyngeal cancers, which include the base of the tongue and tonsils. This disease is the second-most-common HPV-associated cancer.
To compile these data, researchers examined 2,670 HPV DNA tissue samples from seven population-based cancer registries.
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