RT Journal Article T1 Perpetual observational studies: new strategies to support efficient implementation of observational studies and randomized trials in infectious diseases. A1 Hassoun-Kheir, Nasreen A1 van-Werkhoven, C Henri A1 Dunning, Jake A1 Jaenisch, Thomas A1 van-Beek, Janko A1 Bielicki, Julia A1 Butler, Christopher C A1 Francois, Bruno A1 Harbarth, Stephan A1 Hernandez Padilla, Ana C A1 Horby, Peter A1 Koopmans, Marion A1 Lee, James A1 Rodriguez-BaƱo, Jesus A1 Tacconelli, Evelina A1 Themistocleous, Yrene A1 van-der-Velden, Alike W A1 Bonten, Marc A1 Goossens, Herman A1 de-Kraker, Marlieke E A K1 Antimicrobial resistance K1 Emerging infectious diseases K1 Perpetual observational studies K1 Research network K1 Study methodology AB Emerging infectious diseases are a growing threat, through population growth , increased trade and travel , urbanization , deforestation , and climate change [1]. Clinical research in response to emerging infectious diseases is challenging; selecting and contracting the appropriate study sites for a trial is time consuming, and often too few patients can be timely recruited to acquire high-quality evidence about the best treatment strategies [2]. In 2014, the EU-funded PREPARE project (Platform foR European Preparedness Against (Re-)emerging Epidemics ) was initiated to rapidly respond to severe infectious diseases outbreaks . It initiated two adaptive platform trials, the REMAP-CAP [3] and the ALIC4E trial [4], determining the effectiveness of multiple treatment strategies for a single disease . The REMAP-CAP trial was designed for a pandemic of severe community-acquired pneumonia and expanded globally during the COVID-19 pandemic. It has already delivered 10 important conclusions for better treatment of COVID-19 [3]. PB Elsevier Ltd YR 2022 FD 2022-12 LK http://hdl.handle.net/10668/22135 UL http://hdl.handle.net/10668/22135 LA en NO Hassoun-Kheir N, van Werkhoven CH, Dunning J, Jaenisch T, van Beek J, Bielicki J, et al. Perpetual observational studies: new strategies to support efficient implementation of observational studies and randomized trials in infectious diseases. Clin Microbiol Infect. 2022 Dec;28(12):1528-1532. DS RISalud RD Aug 6, 2025