Drivers of health polarization during the COVID-19 pandemic: A systematic review.

Health polarization has emerged as a critical factor shaping public health attitudes and behaviors, particularly during crises such as the COVID-19 pandemic. This study provides a systematic review of the key determinants driving health polarization, highlighting the complex interplay of political, social, economic, and psychological factors. By synthesizing findings from 90 studies, we identify six primary drivers: political ideology and partisanship, misinformation and disinformation, social media structures and dynamics, trust in health institutions and professionals, risk and public health perceptions, and socioeconomic factors. Our analysis reveals how these determinants reinforce societal divisions, exacerbate health inequalities, and influence adherence to public health measures. Furthermore, we discuss the implications of these findings for designing effective interventions that address the root causes of health polarization. Understanding the mechanisms underlying these divisions is essential for mitigating their negative impact on public health and fostering more cohesive, evidence-based health communication strategies.