Both formal and informal information trust were correlated with all situational awareness variables except worry about contracting A/H1N1 (''Worry''), while formal information trust was also independent of perceived personal susceptibility (''Susceptibility''). In turn, understanding of H1N1 cause (''Understanding'') and Perceived self-efficacy (''Self-efficacy'') were significantly associated with hand washing while Worry and Susceptibility were significantly associated with social distancing (Table S3 ).