The human papillomavirus (HPV) is actually a group of about 150 viruses, and it's one of the most common sexually transmitted infections (STI). According to the Centers for Disease Control and Prevention (CDC), almost all men and women get the virus at some point in their lives, and nearly 80 million people are infected in the United States. The HPV vaccine is an attempt to stop the spread of the virus and protect people from HPV-related cancers. Click here to read more about the HPV vaccine and how you can protect your child from this common disease.