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Ever received HPV vaccine

Codes and Frequencies

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For sample adults ages 18-64 and sample children ages 9-17, HPVACHAD indicates whether they ever received the HPV vaccine. For 2011-2018, HPVACHAD was asked only of sample adults 18-64. Please see the Universe tab for additional changes to the universe prior to 2011.

For negative responses prior to 2019, HPVACHAD also indicates those who volunteered the information that their doctor refused to approve vaccination when asked. Those who answered "Yes" were asked how many HPV shots they had received (HPVACNO).

In 2022, those who had received the HPV vaccine were also asked their age when receiving their first shot (HPV1STAGE). The HPV vaccination questions were sponsored by the National Center for Immunization and Respiratory Diseases (NCIRD).

The CDC's recommendations for HPV vaccination have changed over time.


The CDC first recommended the HPV vaccine for girls in 2006. According to the CDC website on HPV, "The HPV vaccine is routinely recommended for 11- and 12-year-old girls. The vaccine series can be started at 9 years of age. Catch-up vaccination is recommended for 13 through 26-year-old females who have not yet received the vaccine series."

In October 2009, the FDA approved the vaccine Gardasil for use by males. In February 2012, the CDC formally recommended the use of the vaccine by males.

As of 2012, the CDC recommends the following on their website:

HPV vaccines are recommended for all teen girls and women through age 26, who did not get all three doses of the vaccine when they were younger.

HPV vaccine is recommended for all teen boys and men through age 21, who did not get all three doses of the vaccine when they were younger. The vaccine is also recommended for gay and bisexual men (or any man who has sex with men) and men with compromised immune systems (including HIV) through age 26, if they did not get fully vaccinated when they were younger. All men may get the vaccine through age 26...

The HPV vaccine is administered in 3 intra-muscular injections given over 6 months.
As of 2022, the CDC recommends the following on their website:

HPV vaccination is recommended for everyone ages 11-12 years old. Vaccines can be given starting at age 9. Teens and young adults through age 26 years who have not started or finished the HPV vaccine series also need HPV vaccination.

It is recommended that the first dose be received at ages 11-12 years old. Only two doses are needed if the first dose is given before the child turns 15 years old. Those who begin the series between the ages of 15-26 need three doses of the HPV vaccine. Children ages 9-14 who received two doses of the vaccine less than 5 months apart and those with a weakened immune system will also need a third dose.

Vaccination is not recommended for everyone older than 26 years of age because there is a higher chance that those over 26 years have already been exposed to HPV. Some adults may choose to still receive the vaccine after speaking with their doctor.

Related Variables

Persons who did not respond affirmatively to HPVACHAD were asked a series of questions about their interest in the vaccine and the barriers (such as cost) to vaccination.


Specifically, these questions (and their associated IPUMS NHIS questions) are:

  • Ever heard about HPV vaccine (HPVACHEAR) (2008 children and adults; 2009 adults only)

  • Interested in HPV vaccine (HPVACINT) (2008 adults only)
  • Would get HPV shot if recommended (HPVACGETREC) (2008 children only)
  • Main reason would not receive HPV vaccine (HPVACNOWHY) (2008 children and adults)
  • Would get HPV vaccine if cost 350 to 500 dollars (HPVACGET500) (2008 children and adults)
  • Would SC get HPV vaccine if it were free/at a lower cost (HPVACGETFRE) (2008 children and adults)

For a full list of HPV-related variables and information, including definitions, see (HPVHEAR).


Comparability is affected by changes to the universe and the 2019 questionnaire redesign.

For 2008 and 2009, HPVACHAD is only available for some sample females. Beginning in 2010, the variable is available for both sample females and sample males.

Additionally, sample children have moved in and out of the universe for HPVACHAD over time.

Finally, the NHIS questionnaire was substantially redesigned in 2019 to introduce a different data collection structure and new content. For more information on changes in terminology, universes, and data collection methods beginning in 2019, please see the user note.


  • 2008: Female sample adults age 18-64 and female sample children age 8-17.
  • 2009: Female sample adults age 18-64.
  • 2010: Sample adults age 18-64 and sample children age 8-17.
  • 2011-2018: Sample adults age 18-64.
  • 2019: Sample adults age 18-64.
  • 2022: Sample adults age 18-64 and sample children age 9-17.


  • 2008-2019, 2022