Human papillomavirus is the most common sexually transmitted infection. It is a dangerous infection because it can lead to cancer many years later. The best way to prevent developing HPV-associated cancer is to get vaccinated during preteen and early teen years. Boys and girls should get vaccinated before they start any kind of sexual activity for the vaccine to be the most effective. To be fully protected boys and girls should receive 3 doses over a year and half (one dose every six months). The New York Health department is campaigning for the vaccine as recent statistics show that on average in New York City only 40% of girls 13 to 17 years old and 22% of boys 13 to 17 years old have received the 3 doses. In Staten Island, Central/Southern Brooklyn, and Greenpoint/Williamsburg, statistics show only 5.8% to 25.1% of girls aged 13-17 and 0% to 5.9% of boys aged 13-17 received all three doses of the vaccine.