Internet Survey of Awareness and Behavior Related to HPV Vaccination in Japan

Risa Kudo, Masayuki Sekine* (Corresponding Author), Manako Yamaguchi, Megumi Hara, Sharon J. B. Hanley, Yutaka Ueda, Asami Yagi, Sosuke Adachi, Megumi Kurosawa, Etsuko Miyagi, Takayuki Enomoto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
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Recommendations for HPV vaccines were suspended in 2013 due to unfounded safety fears in Japan. We aimed to clarify the differences between vaccinated and unvaccinated females in their awareness, knowledge, and behaviors toward cervical cancer, HPV vaccination and sex. Questionnaires were administered online to women aged 16 to 20. We conducted investigations for the following: awareness, knowledge, and actions for cervical cancer, HPV vaccination, and sexual activity, as well as items related to participants' social background. The survey in 828 girls revealed three points. The first is that more than half of the surveyed Japanese girls had poor knowledge about cervical cancer screening, HPV, or HPV vaccines. The second is that those in the unvaccinated group had a particularly poor knowledge of the subject and tended to have higher sexual activity. The final is that only 0.5% of the girls experienced changes in awareness about sexual activity after vaccination. In conclusion, this is the first large-scale survey analyzing the association between HPV vaccination and sexual activity in Japanese girls. Not only do unvaccinated girls not benefit from vaccines, but they also tend to engage in high-risk sexual behavior, and thus it is even more important to provide information on the effectiveness of vaccines and the usefulness of cancer screening.
Original languageEnglish
Article number87
Number of pages10
Issue number2
Early online date25 Jan 2021
Publication statusPublished - 25 Jan 2021

Bibliographical note

Funding Information:
Funding: This work was supported by the Health and Labor Sciences Research Grant No. 26272001 and the Japanese Agency for Medical Research and Development (JP15ck0106103).


  • cervical cancer
  • HPV vaccination
  • cancer screening
  • Internet survey
  • sexual behavior


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