Seth Godin has been studying digital media “viruses” for more than 20 years, and he thinks much of what we have discovered about them comes from the analogy to epidemiology and the behavior of real viruses

The ideavirus in the media is preceding the actual virus’s arrival. That means we are experiencing the effects of this twice. Once, when we’re filled with fear of the unknown (with various entities fanning panic) and again when it actually arrives.