Le programme de renforcement des capacités et d'évaluation d'impact en Afrique de l'Ouest (WACIE) est une initiative régionale qui soutient et promeut la culture de la prise de décision fondée sur des données probantes dans les systèmes gouvernementaux des pays de l'Union Economique et Monétaire Ouest-Africaine (UEMOA) : Bénin, Burkina Faso, Côte d'Ivoire, Guinée-Bissau, Mali, Niger, Sénégal et Togo.

Vaccines prevent millions of child deaths each year. Over the past few years, however, global immunization coverage has stagnated and even slipped, particularly in low- and middle-income countries (L&MICs). This was even before the COVID-19 pandemic increased the number of unvaccinated children by 6 million between 2019 and 2021. In 2021, the World Health Organization estimated that 25 million children under age one had not received all their vaccinations.