This presentation gives a progress overview of ongoing COHORT study in Bungoma Kenya. The main aims is to assess how uptake of Orange fleshed sweetpotato (OFSP) interventions impacts the Vitamin A, nutrition and health status of mothers and infants. The main report shows progress in data collection and management. Additionally, challenges faced are also reported such as poor screening by professionals, unknown LMPs by mothers, inactive CHW and communication challenges.