Gardasil was recommended. However parents could ALWAYS opt out of any immunization. Public Health reasons for giving immunizations are to give vaccines early to prevent disease. In this case, HPV causes ovarian cancer. You want this particular vaccine before a girl becomes sexually active. We teach our girls not to engage in sexual activity at young ages, but they don’t always listen. By the time you have symptoms from ovarian cancer, it is usually to late for treatment. Again, parents may OPT OUT of vaccinations for a variety of reasons.