Willingness to pay.

Notes: Abbreviations: WTP = willingness to pay; € = euro; CI = 95% confidence interval based on the Krinsky and Robb method adjusted for class probabilities and taking into account interaction effects (see Figure S3 for more information). (1) Mild pandemic is defined as a disease with a susceptibility of 5% and a severity of 5%. (2) Moderate pandemic is defined as a disease with a susceptibility of 10% and a severity of 25%. (3) Severe pandemic is defined as a disease with a susceptibility of 20% and a severity of 75%.