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It is probably one of the most significant medical breakthroughs of this past decade. A vaccine to prevent cancer! We now better understand the link between cancers and viruses and how some viruses such as the human papillomavirus (HPV) can change cells and cause them to become cancerous. In essence we have identified a communicable form of cancer.

HPV is often a sexually transmitted disease, which according to the U.S. Centers for Disease Control and Prevention (CDC) is very common and it infects about 6 million people a year. It's estimated that 50 percent of sexually active men and women have been exposed at some point in their lives. There are hundreds of strains of HPV; about 30 to 40 of the strains are sexually transmitted. In the majority of the infections our body's immune system takes care of it without any treatment. However some of these sexually transmitted infections can cause cervical cancer. It's the high-risk strains the virus that remain in the body and cause a long-term infections. It then invades the cells of the cervix causing changes in the cellular structure and DNA to become pre-cancerous lesions as well as cause genital warts. If these infections aren't detected and treated they can go on to eventually become an invasive cervical cancer.

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