Scaling up a home-visiting program for child development in Brazil: a comparative case studies analysis

Background In 2016, Brazil scaled up the Crianca Feliz Program (PCF, from the acronym in Portuguese), making it one of the largest Early Childhood Development (ECD) programs worldwide. However, the PCF has not been able to achieve its intended impact. We aimed to identify barriers and facilitators to achieving the PCF implementation outcomes across the RE-AIM dimensions (Reach, Effectiveness or Efficacy, Adoption, Implementation and Maintenance) during the COVID-19 pandemic. Methods This comparative case study analysis selected five contrasting municipalities based on population size, region of the country, implementation model, and length of time implementing the PCF. We conducted 244 interviews with PCF municipal team (municipal managers, supervisors, home visitors), families, and cross-sectoral professionals. A rapid qualitative analysis was used to identify themes across RE-AIM dimensions. Findings Families' limited knowledge and trust in PCF goals were a barrier to its reach. While the perceived benefit of PCF on parenting skills and ECD enabled reach, the lack of referral protocols to address social needs, such as connecting food-insecure families to food resources, undermined effectiveness. Questions about whether the social assistance sector should be in charge of PCF challenged its adoption. Implementation barriers exacerbated by the COVID-19 pandemic included low salaries, temporary contracts, high turnover, infrequent supervision, lack of an effective monitoring system, and nonexistence or non-functioning multisectoral committees. The absence of institutionalized funding was a challenge for sustainability. Interpretation Complex intertwined system-level barriers may explain the unsuccessful implementation of PCF. These barriers must be addressed for Brazil to benefit from the enormous reach of the PCF and the evidencebased nurturing care principles it is based upon.