Oral rehydration salts and zinc for childhood diarrhoea in Bangladesh, 2019 and 2025: coverage, wealth inequality and reported source of care

Background: Diarrhoea remains a major cause of morbidity and mortality among children under five. WHO and UNICEF recommend oral rehydration salts (ORS) alongside 10 to 14 days of zinc supplementation. However, national progress in combined treatment coverage and its socioeconomic and care-related inequalities remains insufficiently understood in Bangladesh. We assessed combined coverage, wealth inequality and differences by reported source of care. Methods: We analysed children under five with caregiver-reported diarrhoea in the 2019 (n=1,589) and 2025 (n=1,634) Multiple Indicator Cluster Surv

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