ArticleHuman vaccines & immunotherapeutics2019
Mass psychogenic illness following HPV immunization in Carmen de Bolivar, Colombia (2014): more uncertainty is required.
Article in Human vaccines & immunotherapeutics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
The interesting article by Simas et. al. describes an outbreak case with over 600 individuals who exhibited neurological symptoms and which occurred in a town located at the northern region of Colombia in 2014. The community associated this event to the second-dose vaccination campaign against the Human Papillomavirus (HPV) and scientists defined it as a mass psychogenic illness. Unfortunately, the authors did not include in their article important findings related to a case-control study (with n = 137 and n = 437, respectively), conducted by the Colombian government. After inquiring "have you ever received vaccination against human papillomavirus?", a significant association with the vaccine was identified (adjusted OR: 10.8, 95% CI: 1.4-80.2).
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