This is the 8 viruses trigger cancer

After conducting various studies, scientists finally managed to find or identify the eight species or types of HPV (human papillomavirus) that cause 90 percent of cervical cancer.

With the discovery they hope will be able to assist the development of preventive vaccines one of the most types of cancer suffered by women in the world and is estimated to have killed 328,000 this year alone.
The researchers conducted a large-scale research for 60 years by examining 10,575 cases of cervical cancer in 38 countries, 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.
The results, published medical journal The Lancet, showed that eight types of the HPV types 16, 18, 45, 33, 31, 52, 58, and 35 (sorted by type of the most influential) 'responsible' for more than 90 percent of cases 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.
These findings emphasize the importance of prevention of cervical cancer through a vaccine currently available and assist the development of second generation vaccines against other HPV types.
There are about 80 percent of cervical neck cancer cases currently occur in developing countries and the disease is caused by a virus that spreads through sex behavior at high risk of cervical cancer disease transmission.
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.