Human papilloma virus is one source of oropharyngeal cancer, and is also one of the culprits for cervical cancer. Deaths from cervical cancer have been dramatically reduced due to diagnostic tests such as the Pap test and the human papilloma virus test. The addition of the HPV vaccine has reduced cervical precancerous incidents in young women ages 15-19 years of age. These factors have led the American Society of Clinical Oncology to release new guidelines in regards to cervical cancer. They recommend a woman between the ages of 25 and 65 undergo cervical cancer screening with HPV DNA testing be performed every five years. Once over 65 years of age a women who has had consistently negative results for 15 years can stop screening. If an HPV DNA test comes back positive further testing for genotype HPV 16/18 should be performed. They also suggest controlling risk factors by not smoking, reducing the number of sexual partners, and practicing safe sex.