Some types of papilloma virus might prevent cervical cancer

There are over 100 different types of human papilloma virus . Cervical cancer is known to be caused by infection with approximately 14 so-called "high-risk" types of this virus.

http://www.sciencedaily.com/releases/2013/04/130410082417.htm?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+sciencedaily%2Fhealth_medicine%2Fviruses+%28ScienceDaily%3A+Health+%26+Medicine+News+--+Viruses%29