Vaccine Confidence: A Global Analysis Exploring Volatility, Polarization, and Trust

The Lancet

This study reports that there is growing evidence of vaccine delays or refusals due to a lack of trust in the importance, safety, or effectiveness of vaccines, alongside persisting access issues. Although immunization coverage is reported administratively across the world, no similarly robust monitoring system exists for vaccine confidence. In this study, vaccine confidence was mapped across 149 countries between 2015 and 2019.

The study's findings highlight the importance of regular monitoring to detect emerging trends to prompt interventions to build and sustain vaccine confidence.