Public health agencies seeking to maintain high vaccination rates face a complex demographic landscape where trust varies significantly by age, gender, and ethnicity. These variations could inform more targeted communication strategies as new vaccines emerge and booster campaigns continue. A comprehensive analysis of over 10,000 Canadian adults during the initial COVID-19 vaccine rollout reveals that while overall vaccine confidence remained robust, meaningful disparities existed across population groups that merit closer examination. The survey documented 95% trust in vaccine safety and 97% in effectiveness nationally, but these aggregate figures masked important variations. Younger males showed notably lower confidence, with trust in COVID-19 vaccine protection dropping to 85% in some cohorts compared to 98% among older adults. This age-gender intersection represents a persistent challenge for public health messaging. The research identified a clear hierarchy in trusted information sources, with public health agencies commanding 84% trust, physicians and health scientists at 70%, while vaccine manufacturers garnered only 31% confidence. This suggests Canadians distinguish between independent health authorities and commercial interests when evaluating vaccine information. Visible minority populations presented a nuanced trust profile, showing higher confidence in public health regulations at 87% versus 83% for non-minorities, yet simultaneously expressing greater preference for natural immunity at 20% compared to 14%. This apparent contradiction highlights the complexity of health decision-making that transcends simple pro- or anti-vaccine categories. These findings provide a valuable baseline for understanding vaccine hesitancy patterns, though the 2021 timing limits applicability to current attitudes. The demographic variations suggest that one-size-fits-all communication strategies may be less effective than targeted approaches that acknowledge different communities' specific concerns and preferred information channels.