2026-07-22T08:00:55Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/189712025-05-08T18:50:35Zcom_20.500.12105_2052com_20.500.12105_2051com_20.500.12105_15322col_20.500.12105_19609col_20.500.12105_16963

00925njm 22002777a 4500 dc Poulimeneas, Dimitrios author Koniordou, Markela author Kousi, Dimitra author Merakou, Christina author Kopsidas, Ioannis author Tsopela, Grammatiki Christina author Argyropoulos, Christos D author Themistocleous, Sophia C author Shiamakkides, George author Constantinou, Marinos author Alexandrou, Alexandra author Noula, Evgenia author Nearchou, Andria author Salmanton-García, Jon author Stewart, Fiona A author Heringer, Sarah author Albus, Kerstin author Álvarez-Barco, Elena author Macken, Alan author Di Marzo, Romina author Luis, Catarina author Valle-Simón, Paula author Askling, Helena Hervius author Hellemans, Margot author Spivak, Orly author Davis, Ruth Joanna author Azzini, Anna Maria author Barta, Imre author Součková, Lenka author Jancoriene, Ligita author Akova, Murat author Mallon, Patrick W G author Olesen, Ole F author Frías-Iniesta, Jesús author van Damme, Pierre author Tóth, Krisztina author Cohen-Kandli, Miriam author Cox, Rebecca Jane author Husa, Petr author Nauclér, Pontus author Marques, Laura author Ochando, Jordi author Tacconelli, Evelina author Zeitlinger, Markus author Cornely, Oliver A author Pana, Zoi-Dorothea author Zaoutis, Theoklis E author VACCELERATE consortium author 2023-11-29 Underserved and hard-to-reach population groups are under-represented in vaccine trials. Thus, we aimed to identify the challenges of vaccine trial participation of these groups in member countries of the VACCELERATE network. Seventeen National Coordinators (NC), each representing their respective country (15 European countries, Israel, and Turkey), completed an online survey. From 15 eligible groups, those that were more frequently declared underserved/hard-to-reach in vaccine research were ethnic minorities (76.5%), persons experiencing homelessness (70.6%), illegal workers and refugees (64.7%, each). When prioritization for education on vaccine trials was considered, ethnic groups, migrants, and immigrants (5/17, 29.4%) were the groups most frequently identified by the NC as top targets. The most prominent barriers in vaccine trial participation affecting all groups were low levels of health literacy, reluctance to participate in trials due to engagement level, and low levels of trust in vaccines/vaccinations. This study highlighted population groups considered underserved/hard-to-reach in countries contained within the European region, and the respective barriers these groups face when participating in clinical studies. Our findings aid with the design of tailored interventions (within-and across-countries of the European region) and with the development of strategies to overcome major barriers in phase 2 and phase 3 vaccine trial participation. Vaccines (Basel). 2023 Nov 29;11(12):1784. 10.3390/vaccines11121784 2076-393X Vaccines 38140188 http://hdl.handle.net/20.500.12105/18971 Barriers COVID-19 Europe Pandemic preparedness SARS-CoV-2 Vaccinations Vaccine education Vaccine trials The Challenges of Vaccine Trial Participation among Underserved and Hard-to-Reach Communities: An Internal Expert Consultation of the VACCELERATE Consortium