abstract: 'The early years are critical and inform the developmental trajectory of children. This is justifiably attracting growing policy attention. Much of this attention is focused on interventions and policies directed at parents, especially mothers. Yet emerging evidence suggests that increasing numbers of children in rapidly urbanizing low- and middle-income countries are now spending much of their day with other formal and informal childcare providers, including largely unregulated paid childcare providers. This paper summarizes the limited literature about the use of such paid childcare in low- and middle-income countries in sub-Saharan Africa, before considering possible reasons behind the lack of research evidence. Finally, key research gaps and their implications for public health practice are explored, with reference to the ongoing British Academy funded Nairobi Early Childcare in Slums research programme in Nairobi, Kenya. We argue that improving childcare may be an under-explored strategy to help some of the world''s most disadvantaged children in the most important period of their lives, and that interventions in this largely informal market should be built on a rigorous research base. This article is part of the theme issue `Multidisciplinary perspectives on social support and maternal-child health''.' affiliation: 'Hughes, RC (Corresponding Author), London Sch Hyg \& Trop Med, Fac Epidemiol \& Populat Hlth, Dept Populat Hlth, Keppel St, London WC1E 7HT, England. Hughes, Robert C.; Bhopal, Sunil S.; Kirkwood, Betty R., London Sch Hyg \& Trop Med, Fac Epidemiol \& Populat Hlth, Dept Populat Hlth, Keppel St, London WC1E 7HT, England. Kitsao-Wekulo, Patricia; Muendo, Ruth; Kimani-Murage, Elizabeth, African Populat \& Hlth Res Ctr, Maternal \& Child Wellbeing Unit, Nairobi, Kenya. Bhopal, Sunil S., Newcastle Univ, Populat Hlth Sci Inst, Fac Med Sci, Newcastle Upon Tyne, Tyne \& Wear, England. Hill, Zelee, UCL, Inst Global Hlth, Epidemiol \& Publ Hlth, London, England.' article-number: '20200430' author: Hughes, Robert C. and Kitsao-Wekulo, Patricia and Muendo, Ruth and Bhopal, Sunil S. and Kimani-Murage, Elizabeth and Hill, Zelee and Kirkwood, Betty R. author-email: robert.hughes@lshtm.ac.uk author_list: - family: Hughes given: Robert C. - family: Kitsao-Wekulo given: Patricia - family: Muendo given: Ruth - family: Bhopal given: Sunil S. - family: Kimani-Murage given: Elizabeth - family: Hill given: Zelee - family: Kirkwood given: Betty R. da: '2023-09-28' doi: 10.1098/rstb.2020.0430 eissn: 1471-2970 files: [] issn: 0962-8436 journal: PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES keywords: 'early childhood development; urban health; child health; childcare; nurturing care' keywords-plus: HEALTH; ADVERSITY; WORK language: English month: JUN 21 number: '1827' number-of-cited-references: '50' orcid-numbers: 'Hughes, Robert/0000-0002-1345-3063 Kitsao-Wekulo, Patricia/0000-0003-4206-9746 Bhopal, Sunil/0000-0003-1229-781X Kirkwood, Betty/0000-0001-5274-6072' papis_id: a0c47bc4ac268ea131a88fa0b1ff8f52 ref: Hughes2021whoactually researcherid-numbers: 'Kimani-Murage, Elizabeth/HGB-3312-2022 ' times-cited: '8' title: Who actually cares for children in slums? Why we need to think, and do, more about paid childcare in urbanizing sub-Saharan Africa type: Editorial Material unique-id: WOS:000646856500006 usage-count-last-180-days: '0' usage-count-since-2013: '2' volume: '376' web-of-science-categories: Biology year: '2021'