Creative Commons Attribution 3.0 IGO licence (CC BY 3.0 IGO)Ager, AlastairSaleh, ShadiWurie, HajaWitter, Sophie2019-06-092019-06-092019-06-01Ager, A., Saleh, S., Wurie, H. and Witter, S. (2019) ‘Health systems research in fragile settings’ [Editorial], Bulletin of the World Health Organization, 97(6), pp. 378-378A. Available at: https://doi.org/10.2471/BLT.19.233965.1564-0604https://eresearch.qmu.ac.uk/handle/20.500.12289/9761https://doi.org/10.2471/blt.19.233965NIHR Research Unit on Health in Situations of FragilityAlastair Ager - ORCID: 0000-0002-9474-3563 https://orcid.org/0000-0002-9474-3563Sophie Witter - ORCID: 0000-0002-7656-6188 https://orcid.org/0000-0002-7656-6188Population health indicators have improved in recent decades. Deaths in children younger than five years have declined from over 16 million in 1970 to around 5 million in 2016 and life expectancy at birth has increased from 58 to over 70 years in the same period. However, a major constraint to such progress, and in some contexts a potential source of reversal, is fragility.378-378Aenhttp://creativecommons.org/licenses/by/3.0/igo/Article