CC BY 4.0 Attribution 4.0 InternationalAzasi, EstherAsamoah, Perfect E.Diaconu, Karin2026-01-122026-01-07Azasi, E., Asamoah, P.E. and Diaconu, K. (2026) “Understanding the needs and key determinants of maternal, newborn, and child health among migrants in transit: a scoping review,” Global Health Action, 19(1), p. 2607905. Available at: https://doi.org/10.1080/16549716.2025.2607905.1654-97161654-9880https://eresearch.qmu.ac.uk/handle/20.500.12289/14572https://doi.org/10.1080/16549716.2025.2607905Esther Azasi - ORCID: 0000-0001-7493-0954 https://orcid.org/0000-0001-7493-0954Karin Diaconu - ORCID: 0000-0002-5810-9725 https://orcid.org/0000-0002-5810-9725The global surge in migration has exposed pregnant women and children in transit to heightened risk of maternal and child health (MCH) challenges, driven by systemic barriers and unstable conditions. Evidence on how these transitory factors influence MCH remains limited. This scoping review examined the health needs and key determinants affecting migrant populations in transit, specifically pregnant women and children travelling from their countries of origin to their intended destination countries, with the aim of identifying major barriers and proposing strategies for improved health outcomes. We screened 1202 sources of evidence using five databases (PubMed, Scopus, Europe PMC, CINAHL, and Medline) as well as grey literature. Seven studies met the inclusion criteria. Data were drawn from peer-reviewed literature, charted using a standardized framework, and analysed thematically. Key barriers included financial constraints, language obstacles, and limited access to healthcare services. Although humanitarian organizations offered some support, significant unmet needs remain, including exposure to transactional sex, absence of respectful maternity care, and restricted access to essential health services. These challenges are exacerbated in conflict and crisis settings. The review underscores the importance of addressing key determinants, including location, language, financial capacity, and community support, to improve health outcomes for pregnant women and children under five on the move. This review recommends strengthening community mobilization, leveraging technology, and ensuring equitable access irrespective of users’ cultural or financial constraints.2607905en© 2026 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent.https://creativecommons.org/licenses/by/4.0/Healthcare Access BarriersHumanitarian Health ServicesHealth Systems Response for MigrantsSocial Determinants of HealthSexual and Reproductive HealthArticle10.1080/16549716.2025.2607905