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Social media influencers (SMIs) have become an important source of health information for adolescents. However, the lack of expertise and commercial interests of SMIs pose challenges for adolescent health. To gain a better understanding of these challenges, this scoping review aimed to synthesize existing research on the role of SMIs in adolescent health. Using the PRISMA-ScR approach, we conducted a comprehensive search of eight databases and screened articles based on predefined criteria. The final sample included 51 articles published between 2012 and 2022. Results revealed inconsistent definitions and classifications of SMIs. The most common topics included appearance, nutrition, and substance use, while mental and sexual health topics were underrepresented. The ability of SMIs to establish trustworthy relationships with their followers was highlighted in the reviewed studies, shedding light on potential benefits and challenges for adolescent health. However, most studies focused on the negative roles of SMIs, such as the promotion of unrealistic body images, unhealthy diets, substance use, and inaccurate diagnosis and treatment advice. In addition, inappropriate advertising of unhealthy products (e.g., junk food, tobacco products and alcohol) was identified as a major challenge. The reviewed studies identified stricter regulation and improved social media and health literacy as important avenues for policy action. Less attention was given to the potential positive impact of SMIs and how to effectively include them in health promotion campaigns. In addition, the majority of studies were conducted in the Global North and relied on quantitative approaches, resulting in a lack of representation of minority populations and male adolescents., (Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.)

This article investigates the effects of message framing and distraction on older adults' responses to a radio public service announcement (PSA) to promote influenza and pneumococci vaccinations. In detail, it addresses the message impact on recognition, attitudes toward the ad, and information-seeking intentions. The 2 × 2 online experiment was conducted in August 2019 in Germany. 378 participants aged 60 years and above received a radio PSA with either gain- or loss-framed messages (factor 1). Additionally, half of the participants completed a distraction task while listening (factor 2). Gain frames (η 2 p  =.02) and a non-distracted reception situation (η 2 p  =.04) positively influenced older adults' recognition accuracy. Recognition, in turn, was found to mediate the effect of framing and distraction on the intention to seek further information on the campaign (framing: b = -0.03, distraction: b = 0.05). We conclude that gain-framed radio PSAs are an appropriate tool to raise awareness for a vaccination campaign and its contents, especially when recipients are concentrated while listening to it. We suggest to implement them at the early stages of a health intervention to sensitize people about vaccination, followed by more in-depth information material (e.g., brochures) to create behavior change., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 The Authors. Published by Elsevier Ltd.. All rights reserved.)

Background: Pregnant women are at high risk for severe influenza. However, maternal influenza vaccination uptake in most World Health Organization (WHO) European Region countries remains low, despite the presence of widespread national recommendations. An influenza vaccination reduces influenza-associated morbidity and mortality in pregnancy, as well as providing newborns with protection in their first months. Potential determinants of vaccine hesitancy need to be identified to develop strategies that can increase vaccine acceptance and uptake among pregnant women. The primary objective of the systematic review is to identify the individual determinants of influenza vaccine hesitancy among pregnant women in Europe, and how to overcome the hesitancy., Methods: Databases were searched for peer-reviewed qualitative and quantitative studies published between 2009 and 2019 inclusive. Databases included PubMed via MEDLINE, Cochrane Central Register for Controlled Trials, PsycINFO, SAGE Journals, Taylor and Francis and Springer nature. These covered themes including psychology, medicine, and public health. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) approach, 11 studies were eligible and analyzed for significant determinants of influenza vaccine hesitancy among pregnant women in Europe., Results: The most commonly reported factors were psychological aspects, for example concerns about safety and risks to mother and child, or general low risk perception of becoming ill from influenza. Doubts about the effectiveness of the vaccine and a lack of knowledge about this topic were further factors. There was also influence of contextual factors, such as healthcare workers not providing adequate knowledge about the influenza vaccine or the pregnant lady stating their antivaccine sentiment., Conclusion: Health promotion that specifically increases knowledge among pregnant women about influenza and vaccination is important, supporting a valid risk judgment by the pregnant lady. The development of new information strategies for dialogue between healthcare providers and pregnant women should form part of this strategy., (© 2021. The Author(s).)