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. 2018 Dec 10;18:1360. doi: 10.1186/s12889-018-6268-x

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — HPV-vaccination activity, media coverage, Google Health Trends search activity, public initiatives and significant media events, 2009–2016 in Denmark. Monthly HPV-vaccination initiation (HPV1) and media coverage in Denmark 2009–2015. Vaccination activity defined as proportion of vaccinated girls in relation to girls eligible for vaccination. Media coverage in Denmark 2009–2015 define number of HPV-related news items proportional to the total number of news items. Search activity indicates a relative probability for observation the defined search terms service allowing for a relative comparison between the search volume of different searches, though the absolute number of searches is unknown. The timeline in the bottom of the plot shows public initiatives and significant media events regarding the HPV-vaccine in Denmark. The vertical dotted line shows the changing point in the correlation between vaccine activity and media coverage