Second Opinion with Joan Lunden S07E11 - HPV Vaccine; Cervical Cancer

Cervical cancer is caused by several types of a virus called human papillomaviruses (HPV). The virus spreads through sexual contact. Most women's bodies are able to fight HPV infection. But sometimes the virus leads to cancer. You are at higher risk if you smoke, have many children, use birth control pills for a long time, or have HIV infection.