The cluster approach in SR emerges as a strategic operationalization of UNICEF’s pull strategy, designed to maintain sharp focus on priority areas by leveraging localized insights and community engagement. This shift is particularly critical in the transition from House-to-House (H2H) to Site-to-Site (S2S) campaign modalities, which demand highly targeted planning and execution due to the localized nature of challenges—ranging from geographic disparities to socio-cultural dynamics and access barriers.

The approach is intended to enhance campaign quality and coverage, especially in the 24 high and very high-risk districts of SR. Within these districts, 928 clusters have been identified to facilitate micro-level planning and monitoring. However, a significant number of these clusters (60% of clusters) have consistently underperformed, falling below the global PCA benchmark of 95% since January 2025.