Medical Research Council Unit The Gambia (MRCG), Atlantic Road, Fajara, PO Box 273, Banjul, The Gambia.
Trials. 2024 Sep 2;25(1):579. doi: 10.1186/s13063-024-08419-9.
BACKGROUND: Despite Africa's significant infectious disease burden, it is underrepresented in global vaccine clinical trials. While this trend is slowly reversing, it is important to recognize and mitigate the challenges that arise when conducting vaccine clinical trials in this environment. These challenges stem from a variety of factors peculiar to the population and may negatively impact adverse event collection and reporting if not properly addressed. METHODS: As a team of clinical researchers working within the MRCG (Medical Research Council Unit The Gambia), we have conducted 12 phase 1 to 3 vaccine trials over the past 10 years. In this article, we discuss the challenges we face and the strategies we have developed to improve the collection and reporting of adverse events in low-income settings. OUTCOME: Healthcare-seeking behaviors in the Gambia are influenced by spiritual and cultural beliefs as well as barriers to accessing orthodox healthcare; participants in trials may resort to non-orthodox care, reducing the accuracy of reported adverse events. To address this, trial eligibility criteria prohibit self-treatment and herbal product use during trials. Instead, round-the-clock care is provided to trial participants, facilitating safety follow-up. Constraints in the healthcare system in the Gambia such as limitations in diagnostic tools limit the specificity of diagnosis when reporting adverse events. To overcome these challenges, the Medical Research Council Unit maintains a Clinical Services Department, offering medical care and diagnostic services to study participants. Sociocultural factors, including low literacy rates and social influences, impact adverse event collection. Solicited adverse events are collected during home visits on paper-based or electronic report forms. Community engagement meetings are held before each study starts to inform community stakeholders about the study and answer any questions they may have. These meetings ensure that influential members of the community understand the purpose of the study and the risks and benefits of participating in the trial. This understanding makes them more likely to support participation within their communities. CONCLUSION: Conducting ethical vaccine clinical trials in resource-limited settings requires strategies to accurately collect and report adverse events. Our experiences from the Gambia offer insights into adverse event collection in these settings.
背景:尽管非洲传染病负担沉重,但在全球疫苗临床试验中代表性不足。虽然这种趋势正在缓慢扭转,但重要的是要认识到并减轻在这种环境中进行疫苗临床试验时出现的挑战。这些挑战源于人口特有的各种因素,如果不妥善解决,可能会对不良事件的收集和报告产生负面影响。
方法:作为在 MRCG(医学研究委员会冈比亚分部)工作的临床研究团队,我们在过去 10 年中进行了 12 项 1 期至 3 期疫苗试验。在本文中,我们讨论了我们面临的挑战以及为改善低收入环境中不良事件的收集和报告而制定的策略。
结果:冈比亚的医疗保健寻求行为受到精神和文化信仰以及获得正统医疗保健障碍的影响;试验参与者可能会寻求非正统治疗,从而降低报告不良事件的准确性。为了解决这个问题,试验的纳入标准禁止在试验期间自行治疗和使用草药产品。相反,为试验参与者提供 24 小时护理,方便进行安全性随访。冈比亚医疗保健系统的限制,如诊断工具的局限性,限制了报告不良事件时的诊断准确性。为了克服这些挑战,医学研究委员会分部设有临床服务部门,为研究参与者提供医疗保健和诊断服务。社会文化因素,包括低识字率和社会影响,影响不良事件的收集。在纸质或电子报告表上通过家访收集征询问卷不良事件。在每项研究开始前都会举行社区参与会议,向社区利益相关者介绍研究情况并回答他们可能有的任何问题。这些会议确保社区中有影响力的成员了解研究的目的以及参与试验的风险和益处。这种理解使他们更有可能在其社区中支持参与。
结论:在资源有限的环境中进行符合伦理的疫苗临床试验需要制定策略来准确收集和报告不良事件。我们在冈比亚的经验为这些环境中的不良事件收集提供了见解。
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