Abstract
Information dissemination and the associated change of individual behavior can significantly slow the spread of an epidemic. However, major social events which attract public attention will disturb information spread and affect epidemic transmission in ways that have not been readily quantified. We investigate the interplay between disease spreading and disease-related information dissemination in a two-layer network. We employ the SIR-UAU model with a time dependent coefficient to denote information dissemination. We found that major social events are equivalent to perturbations of information dissemination in certain time intervals and will consequently weaken the effect of information dissemination, and increase prevalence of infection. Our simulation results agree well with the trends of real-world data sets. We find two specific major events explain the trend observed from the coronavirus epidemic in the United States: the online propaganda and international agenda setting of Donald Trump early in 2020 and the 2020 U.S. Presidential Election.
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