Bodhi undertook both a baseline and endline evaluation of Girl Effect and GAVI’s 5.0 programme, which aimed to improve vaccination uptake in Tanzania and Ethiopia, particularly among marginalised and hard-to-reach girls and young mothers. The project employed a gender-sensitive and child-rights-based approach. Data collection included a gender assessment and substantial quantitative surveying among adolescent girls and young women across four regions in Tanzania and three in Ethiopia.