The HPV vaccine is being promoted as protection against cervical cancer, but Merck itself does not ensure protection in its package insert.<ref>http://www.merck.com/product/usa/pi_circulars/g/gardasil/gardasil_pi.pdf</ref> Rather, this claim is based on research showing that 70% of cervical cancer cases also have prevalence of these four strains of HPV.<ref>http://www.cancer.gov/cancertopics/factsheet/Risk/HPV</ref> Cervical cancer has already been quickly declining in the United States ''without'' the vaccine. | The HPV vaccine is being promoted as protection against cervical cancer, but Merck itself does not ensure protection in its package insert.<ref>http://www.merck.com/product/usa/pi_circulars/g/gardasil/gardasil_pi.pdf</ref> Rather, this claim is based on research showing that 70% of cervical cancer cases also have prevalence of these four strains of HPV.<ref>http://www.cancer.gov/cancertopics/factsheet/Risk/HPV</ref> Cervical cancer has already been quickly declining in the United States ''without'' the vaccine. |