Oliveira Iago Marafina de, Pinheiro Roseni, Ortega Francisco, Santana Emiliane Silva
Instituto de Medicina Social Hesio Cordeiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brasil.
Institució Catalana de Recerca i Estudis Avancats, Barcelona, España.
Cad Saude Publica. 2025 Apr 11;41(3):e00097124. doi: 10.1590/0102-311XPT097124. eCollection 2025.
In 2024, dengue in Brazil reached alarming epidemiological rates, being considered potentially the worst year in history. In this context, the arrival of vaccines against the disease represents a great advance for Brazil's public health. However, misinformation and fake news about vaccines pose a threat to the success of immunization campaigns. In this article, we aim to understand the elements of misinformation present in the public perception about the arrival of dengue vaccines in Brazil. To this end, 1,550 comments were collected on online posts from five major media outlets in the country, resulting in five thematic categories created from a categorical content analysis: disinfodemic, misinformation vectors, vaccine politicization, vaccine hesitancy/vaccine refusal, and personal experiences. It is concluded that almost 1/3 of the comments collected have some misleading content, which reinforces the need to create different strategies to confront and combat misinformation. The scenario of vaccine hesitancy and politicization of public health-related issues that exist as a consequence of COVID-19 is of great relevance for discussions in the public sphere and a challenge to be faced in the coming years.
2024年，巴西的登革热疫情达到了惊人的流行率，被认为可能是历史上最糟糕的一年。在此背景下，登革热疫苗的到来对巴西公共卫生而言是一项重大进展。然而，有关疫苗的错误信息和假新闻对免疫接种运动的成功构成了威胁。在本文中，我们旨在了解巴西公众对登革热疫苗到来的认知中存在的错误信息元素。为此，我们收集了来自巴西五家主要媒体在线帖子上的1550条评论，并通过分类内容分析创建了五个主题类别：信息疫情、错误信息传播渠道、疫苗政治化、疫苗犹豫/拒绝接种以及个人经历。研究得出结论，所收集的评论中近三分之一包含一些误导性内容，这凸显了制定不同策略来应对和打击错误信息的必要性。因新冠疫情而出现的疫苗犹豫以及公共卫生相关问题政治化的情况，对于公共领域的讨论具有重大意义，也是未来几年需要面对的一项挑战。
