“…In a series of important papers [11,28] Blower and her collaborators demonstrated that risk behavior change, in the context of HIV vaccinations, could lead to perverse outcomes. Subsequently, several independent studies have confirmed this phenomenon of perversity in the use of HIV vaccines and anti-virals, and vaccines for the human papillomavirus (HPV) [44,9,50,47,42,46,25,41,29,31,38,5].
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