WHAT THIS STUDY ADDS
We designed and refined a story-based intervention that involves Filipino families (especially those who are vaccine-hesitant), community leaders and community health workers using HCD.Our findings highlighted the potential of real-life narratives in developing and honing an intervention rooted in the local context.Our HCD-driven intervention boosts vaccine confidence and increases positive feelings about vaccines. We thereby reinforce the importance of HCD as a method of meaning-making that affects attitudes and behavioural intent in relation to vaccinations.