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The correct answer is actually C: A colored bracelet used to signal vaccination status.
While the answer might seem surprisingly simple, the power of social incentives combined with the cost-effectiveness of this approach make a powerful case for scale-up.
Since 2023, IPA has been collaborating with the Ministry of Health (MoH) in Sierra Leone to scale this intervention to 245 government clinics across eight districts. We are also conducting a randomized evaluation to measure its effectiveness and integrate it into routine systems like the national vaccine supply chain.
More Best Bets: From Pilots to Policy
Your partnership funds the critical research and adaptation necessary to advance ideas like these from successful pilots to permanent policies:
- Preventing Intimate Partner Violence (IPV): Supporting the scale-up of "Becoming One," a couples' counseling program delivered by faith leaders that is proven to prevent IPV.
- Two-Generation Support for Vulnerable Households: Generating evidence for programs that address the needs of children and their caregivers together to achieve breakthrough outcomes.
- Soft Skills for Economic Empowerment: Expanding the evidence base to understand which psychological and social skills drive job seeking, work performance, and business development.