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In England, although not anticipated, a reduction in genital warts (GW) diagnoses was observed from the first years of the human papillomavirus (HPV) vaccination programme using the adjuvanted bivalent vaccine, suggesting potentially cross-protective effect of the vaccine against GW.1
In their recent publication, Checchi et al 2 present results of the GW surveillance programme in England since introduction of the HPV vaccination in 2008, attributing most of the impact observed today to the switch from the bivalent to the quadrivalent …
Footnotes
Handling editor Anna Maria Geretti
Contributors Both authors participated in the analysis and interpretation of the data and the development of this letter. Both had full access to the data and gave final approval before submission.
Competing interests VB and SW are employees of the GSK group of companies. VB also holds shares in the GSK group of companies. GlaxoSmithKline Biologicals SA took in charge all costs associated with the development and publication of this short letter.
Patient consent for publication Not required.
Provenance and peer review Not commissioned; internally peer reviewed.