What is HPV?
HPV (human papillomaviruses) are among the most common sexually transmitted infections worldwide and among the viruses that can cause cancers. In adolescence, these viruses are usually not dangerous. However, the risk for cancers and precancerous lesions increases with age. The main cancers caused by HPV include cervical cancer, anal cancer, and oral and pharyngeal cancers. Many people can become infected with HPV during their lifetime and not notice. However, not every type of HP virus can cause cancer: there are over 170 different human papillomaviruses. The most dangerous types can be prevented with vaccination.