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Monique Luisi, an assistant professor in the Missouri School of Journalism, studied more than 6,500 public HPV vaccine-related posts on Facebook over the first 10 years since the vaccine was approved by the U.S. Food and Drug Administration in 2006. Despite the vaccine's reported benefits of preventing multiple cancers and genital warts, Luisi said 45% of the posts she identified displayed a negative tone toward people getting the vaccine. In addition, over the course of a decade, Luisi identified a negative trend occurring on Facebook toward how people perceive the vaccine — including its safety, effectiveness and whether its use leads to the encouragement of sexual behavior.
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