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Human papilloma virus vaccination provides long-term protection

Date:
September 25, 2014
Source:
Deutsches Aerzteblatt International
Summary:
Persistent infection with a high-risk human papillomavirus (HPV) type is a necessary prerequisite for the development of dysplasia and neoplasia of the cervix, precursors to cervical cancer. The HPV vaccination has been a subject of heated debate since it was launched. Now researchers have produced a systematic review that shows no decrease in protection over a period of five years following vaccination against HPV types 16 and 18.
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Every year, 11.2 of every 100 000 women in Germany develop cervical cancer. Persistent infection with a high-risk human papillomavirus (HPV) type is a necessary prerequisite for the development of dysplasia and neoplasia of the cervix. HPV vaccination has been a subject of heated debate since it was incorporated into the vaccination recommendations of the German Standing Committee on Vaccination (STIKO) in 2007. This edition of Deutsches Ärzteblatt International reveals that Yvonne Deleré of Berlin’s Robert Koch Institute et al. have produced a systematic review that shows no decrease in protection over a period of five years following vaccination against HPV types 16 and 18.

Vaccines authorized for the German market are targeted against HPV types 16 and 18 because these are two of the most common high-risk types in Germany. Vaccination provides protection before infection with these HPV types, thus preventing HPV infection, without which cervical cancer does not develop. As sexual contact is the main route of transmission of HPV, vaccination is most effective when performed in girls and young women aged between 12 and 17 who are not yet sexually active. The review, which focuses on studies investigating the efficacy of vaccination in short- and long-term follow-up, is therefore restricted to HPV-naive girls and women. According to the authors’ calculations, in long-term follow-up vaccination is 94% effective in preventing randomly detected infection, 95% effective in preventing persistent infections, and 86% effective in preventing grade 2 or above cervical intraepithelial neoplasia (CIN 2+). However, smaller study and participant numbers mean that the quality of the evidence on long-term protection is lower than that on short-term protection.

In order to improve the quality of evidence on long-term protection, the authors call for continuation of randomized controlled trials to ascertain the duration of HPV vaccine protection and further observational studies assessing the efficacy of vaccination.


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Materials provided by Deutsches Aerzteblatt International. Note: Content may be edited for style and length.


Journal Reference:

  1. Yvonne Deleré et al. The Efficacy and Duration of Vaccine Protection Against Human Papillomavirus: A Systematic Review and Meta-analysis. Deutsches Ärzteblatt International, 2014; 111: 584%u201391 DOI: 10.3238/arztebl.2014.0584

Cite This Page:

Deutsches Aerzteblatt International. "Human papilloma virus vaccination provides long-term protection." ScienceDaily. ScienceDaily, 25 September 2014. <www.sciencedaily.com/releases/2014/09/140925082231.htm>.
Deutsches Aerzteblatt International. (2014, September 25). Human papilloma virus vaccination provides long-term protection. ScienceDaily. Retrieved December 5, 2024 from www.sciencedaily.com/releases/2014/09/140925082231.htm
Deutsches Aerzteblatt International. "Human papilloma virus vaccination provides long-term protection." ScienceDaily. www.sciencedaily.com/releases/2014/09/140925082231.htm (accessed December 5, 2024).

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