Bridging the Infodemic Equity Gap: North-South Digital Health Disparities and a Framework for Action.

Unlabelled: Rapidly propagating false and misleading health claims do not strike all societies evenly. Structural digital inequalities, uneven platform governance leverage, gaps in multilingual health literacy, and divergent political information climates have combined to produce what is argued here as an infodemic equity gap: a patterned disparity in exposure to, resilience against, and recoverability from health misinformation between and within countries. This viewpoint advances a pragmatic equity-centered framework that dissects that gap into layered capacities (structural infrastructure, ecosystem governance, sociocultural trust and literacy, and adaptive intervention capability) and shows how their interaction generates differential outcomes. Using a purposive comparative lens across 5 archetypal settings (Finland, Taiwan, the United States, Brazil, and India), it shows distinct causal pathways linking technological architectures, governance choices, and social context to measurable process metrics (detection latency, rumor half-life, and multilingual coverage) and outcome indicators (trust trajectories, vaccination differentials, and equity-sensitive gaps). Rather than revisiting broad definitional terrain already synthesized elsewhere, the focus is on isolating disparities that are specifically actionable through digital health policy, measurement standardization, and investment strategies. A forward agenda is outlined for harmonized indicators, evaluation methods, and ethical safeguards needed to reduce inequities in future health emergency information ecologies. The intended audiences are digital health researchers, platform governance teams, public health decision-makers, and funding bodies shaping cross-border preparedness.