
Women now have the option of being immunized against cervical cancer following approval of Merck's Gardasil. Roughly 6.2 million Americans become infected with genital human papillomavirus (HPV) each year, and more than 50% of all sexually active persons become infected at some point. HPV is the most common sexually transmitted infection in the United States. While the body's immune system clears the virus in most women, some go on to develop cervical abnormalities that can lead to cancer. Cervical cancer is the second most common cause of cancer death in women, with roughly 470,000 new cases and 233,000 deaths occurring each year worldwide.