H1N1 Was Not All That Scary: Uncertainty and Stressor Appraisals Predict Anxiety Related to a Coming Viral Threat

H1N1 reached pandemic proportions in 2009, yet considerable ambivalence was apparent concerning the threat presented and the inclination to be vaccinated. The present investigation assessed several factors, notably appraisals of the threat, intolerance of uncertainty, and familiarity with the virus, that might contribute to reactions to a potential future viral threat. Canadian adults (N = 316) provided with several scenarios regarding viral threats reported moderate feelings of anxiety, irrespective of whether the viral threat was one that was familiar versus one that was entirely unfamiliar to them (H1N1 recurrence, H5N1, a fictitious virus: D3N4). Participants appraised the stressfulness of the threats to be moderate and believed that they would have control in this situation. However, among individuals with high intolerance of uncertainty, the viral threat was accompanied by high levels of anxiety, which was mediated by aspects of appraisals, particularly control and stressfulness. In addition, among those individuals that generally appraised ambiguous life events as being stressful, the viral threat appraisals were accompanied by still greater anxiety. Given the limited response to potential viral threats, these results raise concerns that the public may be hesitant to heed recommendations should another pandemic occur.