Girls as young as 9 years old are vulnerable to the virus that causes cervical cancer. That's why getting vaccinated is so important for young girls.

Each year, the United States has six million become infected with human papilloma virus (HPV). HPV is known to cause cervical cancer in women and associated with head and neck cancers in men.

It only makes sense that, to eradicate a sexually-transmitted disease, both sexes need to be vaccinated prior to engaging in sexual activity, which would mean before puberty or early teens.