8 Virus Causes Cervical Cancer

The scientists managed to identify eight types of HPV virus (human papilloma virus) that causes more than 90 percent of cervical cancer (cervical) worldwide.

Identification of eight virus will pave the way for the development of preventive vaccines one of the most common cancer of women in the world and is estimated to kill 328,000 people in 2010. In a large-scale research for 60 years by examining 10,575 cases of cervical cancer in 38 countries, a group of scientists led by Silvia de San Jose of the Catalan Institute of Oncology in Barcelona analyze various types of HPV that most often lead to cervical cancer.

Study results, published medical journal The Lancet, showed that eight types of HPV that is type 16, 18, 45, 33, 31, 52, 58, and 35 (sorted by type of the most influential) 'responsible' for more than 90 percent cases of cervical cancer.

So far, two major companies namely GlaxoSmithKline (GSK) and Merck & Co. has created the HPV vaccine. Cervarix vaccine made by GSK and Merck's Gardasil output is able to prevent HPV types 16 and 18, and through cross-protection can also protect against types 31 and 45.

Many rich countries start HPV immunization program by injecting women before reaching the age of puberty, but in general the vaccine is still expensive and not accessible to women in poor countries. San Jose, said these findings emphasize the importance of reasons for cervical cancer prevention through vaccines currently available and assist the development of second generation vaccines against other HPV types.

About 80 percent of cases of cervical neck cancers currently occur in developing countries and the disease is caused by a virus transmitted through risky sexual behavior.

Than 118 HPV types identified by scientists, about 40 types infect the genital and 12 other types that are known to cause cancer. In a study of cancer cases in Europe, North America, South America the middle, Africa, Asia, and Oceania, the researchers also have identified several rare types such as HPV types 26, 30, 61, 67, 69, 82, and 91 - which will also cause cervical cancer, but causes only about one percent of all cases.



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