Human Papillomavirus Vaccine
by Krisha McCoy, MS
What Is Human Papillomavirus?
Human papillomaviruses (HPV) are a group of more than 100 viruses.
Certain types of HPV can cause genital warts, which are growths or bumps that appear:
HPV is easily spread during oral, genital, or anal sex with an infected partner.
Many people will be exposed to a form of HPV at some point in their lives. Not all will become infected or develop symptoms.
What Is the HPV Vaccine? TOP
The HPV vaccine contains virus-like particles that are not infectious. These particles produce antibodies to prevent HPV from infecting cells. The vaccine is given by injection into the muscle.
The vaccine protects against 9 types of HPV strains. It may be used to prevent the following conditions:
Who Should Be Vaccinated and When? TOP
The HPV vaccine is recommended for girls and boys between 11-12 years old (2 doses at least 6 months apart). For the vaccine to be most effective, adolescents should complete the series before their first sexual contact in order to have time for an immune response to develop. The vaccine may be given starting at 9 years old.
Other recommendations for the HPV vaccine series include:
A 3-shot series is given in those with a suppressed immune system or if the vaccine is started at age 15 or older.
The vaccine is recommended to children starting at age 9 who have a history of sexual abuse.
What Are the Risks Associated With the HPV Vaccine? TOP
Research suggests that the vaccine does not appear to cause any serious side effects. Like any vaccine, it has the potential to cause serious problems, such as a severe allergic reaction.
Some problems have been associated with the HPV vaccines, like pain, redness, swelling, or itching at the injection site. Other potential side effects include:
Who Should Not Be Vaccinated? TOP
Do not get the vaccine if you:
What Other Ways Can HPV Be Prevented Besides Vaccination? TOP
Avoiding physical contact with an infected sexual partner is the only way to completely prevent the spread of a genital HPV infection. Latex condoms may help reduce the spread. However, condoms are not 100% effective because they do not cover the entire genital area.
Other preventive measures include:
What Happens in the Event of an Outbreak? TOP
According to the Centers for Disease Control and Prevention, about 14 million people become infected with sexually transmitted HPV each year. HPV vaccines cannot treat infections that already exist. The best way to prevent further spread of the disease is to get the vaccine before becoming infected.
WHERE CAN I GET MORE INFORMATION?
National Cancer Institute
Vaccine and Immunizations
Centers for Disease Control and Prevention
2015 Sexually transmitted diseases treatment guidelines. Centers for Disease Control and Prevention website. Available at:
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Accessed November 12, 2015.
Centers for Disease Control and Prevention (CDC). FDA licensure of quadrivalent human papillomavirus vaccine (HPV4, Gardasil) for use in males and guidance from the Advisory Committee on Immunization Practices (ACIP). MMWR Morb Mortal Wkly Rep. 2010;59(20):630-632.
Carter JR, Ding Z, Rose BR. HPV infection and cervical disease: a review. Aust N Z J Obstet Gynaecol. 2011;51(2):103-108.
Heffernan ME, Garland SM, Kane MA. Global reduction of cervical cancer with human papillomavirus vaccines: insights from the hepatitis B virus vaccine experience. Sex Health. 2010;7(3):383-390.
HPV (human papillomavirus) VIS. Centers for Disease Control and Prevention website. Available at: https://www.cdc.gov/vaccines/hcp/vis/vis-statements/hpv.html. Updated December 2, 2016. Accessed May 22, 2017.
Human papillomavirus vaccine. EBSCO DynaMed website. Available at: http://www.dynamed.com/topics/dmp~AN~T908142. Updated September 2, 2016. Accessed October 10, 2016.
Immunization schedules. Centers for Disease Control and Prevention website. Available at:
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Updated February 7, 2017. Accessed May 22, 2017.
5/18/2007 DynaMed Plus Systematic Literature Surveillance http://www.dynamed.com/topics/dmp~AN~T908142: The FUTURE II Study Group. Quadrivalent vaccine against human papillomavirus to prevent high-grade cervical lesions. N Engl J Med. 2007;356(19):1915-1927.
6/4/2010 DynaMed Plus Systematic Literature Surveillance http://www.dynamed.com/topics/dmp~AN~T908142: FDA licensure of bivalent human papillomavirus vaccine (HPV2, Cervarix) for use in females and updated HPV vaccination recommendations from the Advisory Committee on Immunization Practices (ACIP). MMWR Morb Mortal Wkly Rep. 2010;59(20):626-629.
Last reviewed May 2017 by David L. Horn, MD
Last Updated: 5/23/2017
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